Patent | Date |
---|
Capsule Endoscope, Capsule Endoscope System, And Method For Controlling Posture Of Capsule Endoscope App 20160058272 - OMOTE; ATSUSHI ;   et al. | 2016-03-03 |
Optical information recording medium, method and apparatus for recording and reproducing for the same Grant 8,133,655 - Kitaura , et al. March 13, 2 | 2012-03-13 |
Initialization method for information recording medium, initialization apparatus for information recording medium, and information recording medium Grant 8,040,765 - Tsuchino , et al. October 18, 2 | 2011-10-18 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20110205874 - NARUMI; Kenji ;   et al. | 2011-08-25 |
Optical Information Recording Method, Optical Information Recording Device And Optical Information Recording Medium App 20110090778 - NARUMI; Kenji ;   et al. | 2011-04-21 |
Optical information recording medium, optical information recording method, and optical information recording apparatus Grant 7,894,318 - Narumi , et al. February 22, 2 | 2011-02-22 |
Optical information recording method, optical information recording device and optical information recording medium Grant 7,881,173 - Narumi , et al. February 1, 2 | 2011-02-01 |
Optical Information Recording Method, Optical Information Recording Device And Optical Information Recording Medium App 20100309767 - Narumi; Kenji ;   et al. | 2010-12-09 |
Method of recording information, equipment thereof and information recording medium Grant 7,830,779 - Takahashi , et al. November 9, 2 | 2010-11-09 |
Optical information recording method, optical information recording device and optical information recording medium Grant 7,821,892 - Narumi , et al. October 26, 2 | 2010-10-26 |
Optical information recording method, optical information recording device and optical information recording medium Grant 7,813,239 - Narumi , et al. October 12, 2 | 2010-10-12 |
Initialization Method For Information Recording Medium, Initialization Apparatus For Information Recording Medium, And Information Recording Medium App 20100254233 - Tsuchino; Akio ;   et al. | 2010-10-07 |
Optical information recording method, optical information recording device, and optical information recording medium Grant 7,760,596 - Narumi , et al. July 20, 2 | 2010-07-20 |
Optical information recording medium and manufacture method thereof Grant 7,540,006 - Nagata , et al. May 26, 2 | 2009-05-26 |
Optical Information Recording Method, Optical Information Recording Device And Optical Information Recording Medium App 20090129225 - NARUMI; Kenji ;   et al. | 2009-05-21 |
Optical information recording method, optical information recording and reproducing device, and optical information recording medium Grant 7,492,687 - Miyagawa , et al. February 17, 2 | 2009-02-17 |
Optical information recording medium, method for manufacturing the same, and initialization device Grant 7,463,575 - Akiyama , et al. December 9, 2 | 2008-12-09 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080247305 - NARUMI; Kenji ;   et al. | 2008-10-09 |
Optical information recording medium and method of manufacturing thereof, manufacturing apparatus, recording/reproducing method, and recording/reproducing apparatus Grant 7,423,957 - Kusada , et al. September 9, 2 | 2008-09-09 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080212428 - NARUMI; Kenji ;   et al. | 2008-09-04 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080212458 - Narumi; Kenji ;   et al. | 2008-09-04 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080212447 - NARUMI; Kenji ;   et al. | 2008-09-04 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080198714 - NARUMI; Kenji ;   et al. | 2008-08-21 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080198713 - NARUMI; Kenji ;   et al. | 2008-08-21 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080198712 - NARUMI; Kenji ;   et al. | 2008-08-21 |
Optical information recording medium and method for manufacturing the medium Grant 7,376,070 - Sakaue , et al. May 20, 2 | 2008-05-20 |
Optical information recording medium containing a plurality of recording layers provided with characteristics to achieve optimum recording conditions Grant 7,376,058 - Narumi , et al. May 20, 2 | 2008-05-20 |
Optical Information Recording Medium, Method And Apparatus For Recording And Reproducing For The Same App 20080080352 - Kitaura; Hideki ;   et al. | 2008-04-03 |
Optical Information Recording Medium, Optical Information Recording Method, And Optical Information Recording Apparatus App 20080074980 - NARUMI; Kenji ;   et al. | 2008-03-27 |
Optical information recording method, optical information recording device and optical information recording medium App 20080043592 - Narumi; Kenji ;   et al. | 2008-02-21 |
Optical information recording method, optical information recording and reproducing device, and optical information recording medium App 20080019241 - Miyagawa; Naoyasu ;   et al. | 2008-01-24 |
Optical information recording method and apparatus for multiple recording layer medium Grant 7,292,525 - Miyagawa , et al. November 6, 2 | 2007-11-06 |
Optical Recording Medium, Method Of Manufacturing Optical Recording Medium, Apparatus For Manufacturing Optical Recording Medium, Program, And Medium App 20070223354 - Sato; Shuji ;   et al. | 2007-09-27 |
Substrate for optical recording medium, optical recording medium, master disc, master disc recording apparatus, and signal generating apparatus Grant 7,251,202 - Nishiuchi , et al. July 31, 2 | 2007-07-31 |
Optical recording medium, method of manufacturing optical recording medium, apparatus for manufacturing optical recording medium, program, and medium Grant 7,239,601 - Sato , et al. July 3, 2 | 2007-07-03 |
Information recording medium with management area having recording identification information Grant 7,215,620 - Nishiuchi , et al. May 8, 2 | 2007-05-08 |
Optical recording medium and recording method for the same Grant 7,200,102 - Irie , et al. April 3, 2 | 2007-04-03 |
Optical recording medium, method for recording on optical record medium, and apparatus for recording on optical record medium Grant 7,193,948 - Furukawa , et al. March 20, 2 | 2007-03-20 |
Optical information recording method, optical information recording device and optical information recording medium Grant 7,193,947 - Narumi , et al. March 20, 2 | 2007-03-20 |
Recording/reproduction apparatus and recording/reproduction method Grant 7,177,241 - Nishiuchi February 13, 2 | 2007-02-13 |
Optical recording medium and recording method for the same Grant 7,170,848 - Irie , et al. January 30, 2 | 2007-01-30 |
Optical recording medium and recording method for the same Grant 7,170,839 - Irie , et al. January 30, 2 | 2007-01-30 |
Method and apparatus for recording/reproducing information with respect to optical recording medium Grant 7,158,458 - Furukawa , et al. January 2, 2 | 2007-01-02 |
Optical Information Recording Medium, Method For Manufacturing The Same, And Initialization Device App 20060292499 - AKIYAMA; Tetsuya ;   et al. | 2006-12-28 |
Optical information recording medium, optical information recording method, optical information record/reproduce apparatus and semiconductor circuit App 20060280109 - Narumi; Kenji ;   et al. | 2006-12-14 |
Optical information recording method, device, and recording medium with plural recording layers Grant 7,142,496 - Miyagawa , et al. November 28, 2 | 2006-11-28 |
Optical recording medium and recording method for the same Grant 7,136,348 - Irie , et al. November 14, 2 | 2006-11-14 |
Multi-layer optical information recording medium with pits or grooves Grant 7,136,349 - Nishiuchi , et al. November 14, 2 | 2006-11-14 |
Optical apparatus and method for producing the same Grant 7,133,428 - Kitaoka , et al. November 7, 2 | 2006-11-07 |
Recording/reproducing apparatus with optical path correction system Grant 7,123,570 - Akiyama , et al. October 17, 2 | 2006-10-17 |
Optical information recording medium manfacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus Grant 7,116,631 - Nishiuchi , et al. October 3, 2 | 2006-10-03 |
Optical information recording method, optical information recording device and optical information recording medium Grant 7,116,623 - Narumi , et al. October 3, 2 | 2006-10-03 |
Optical information recording medium, method of manufacturing thereof, and method of recording and reproduction Grant 7,106,686 - Nishiuchi , et al. September 12, 2 | 2006-09-12 |
Optical information recording medium and optical information recording and reproducing apparatus Grant 7,095,705 - Nishiuchi , et al. August 22, 2 | 2006-08-22 |
Optical recording medium with address information composed of pits Grant 7,088,668 - Akiyama , et al. August 8, 2 | 2006-08-08 |
Method for optically recording information and device for optically recording information by the same Grant 7,088,656 - Narumi , et al. August 8, 2 | 2006-08-08 |
Recording/reproducing apparatus for optical information recording medium and optical head Grant 7,075,870 - Akiyama , et al. July 11, 2 | 2006-07-11 |
Optical information recording medium and manufacture method thereof App 20060146685 - Nagata; Ken'ichi ;   et al. | 2006-07-06 |
Optical information recording medium manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus App 20060140075 - Nishiuchi; Kenichi ;   et al. | 2006-06-29 |
Multilayer information medium, reproduction method and reproduction device thereof App 20060139803 - Furukawa; Shigeaki ;   et al. | 2006-06-29 |
Optical recording medium and recording method for the same Grant 7,061,850 - Irie , et al. June 13, 2 | 2006-06-13 |
Optical information recording medium, and method and apparatus for recording/reproducing information thereon Grant 7,020,065 - Akiyama , et al. March 28, 2 | 2006-03-28 |
Optical Information Recording Medium And Production Method Of The Same App 20060062131 - Nagata; Kenichi ;   et al. | 2006-03-23 |
Optical information recording method, optical information recording device and optical information recording medium App 20060044968 - Narumi; Kenji ;   et al. | 2006-03-02 |
Optical information recording method, optical information recording and reproducing device, and optical information recording medium App 20060023588 - Miyagawa; Naoyasu ;   et al. | 2006-02-02 |
Recording/reproduction apparatus, recording/reproduction method and information recording medium App 20050276177 - Nishiuchi, Kenichi | 2005-12-15 |
Method for optically recording information and device for optically recording information by the same Grant 6,975,571 - Narumi , et al. December 13, 2 | 2005-12-13 |
Optical information recording medium and optical information recording and reproducing apparatus Grant 6,975,579 - Nishiuchi , et al. December 13, 2 | 2005-12-13 |
Multivalued information recording method, multivalued information recording apparatus, and recording medium Grant 6,967,911 - Ishibashi , et al. November 22, 2 | 2005-11-22 |
Optical information recording medium and production method therefor App 20050253210 - Uno, Mayumi ;   et al. | 2005-11-17 |
Recording/reproduction apparatus, recording/reproduction method and information recording medium Grant 6,952,382 - Nishiuchi October 4, 2 | 2005-10-04 |
Method and apparatus for recording/reproducing information with respect to optical recording medium App 20050201228 - Furukawa, Shigeaki ;   et al. | 2005-09-15 |
Optical information recording medium, recording/reproducing apparatus and recording /reproducing method for the same, and method for manufacturing optical information recording medium Grant 6,934,243 - Akiyama , et al. August 23, 2 | 2005-08-23 |
Optical information recording method, optical information recording device, and optical information recording medium App 20050174906 - Narumi, Kenji ;   et al. | 2005-08-11 |
Optical recording medium and recording method for the same App 20050163027 - Irie, Hiroaki ;   et al. | 2005-07-28 |
Optical recording medium and recording method for the same App 20050163009 - Irie, Hiroaki ;   et al. | 2005-07-28 |
Optical recording medium and recording method for the same App 20050163030 - Irie, Hiroaki ;   et al. | 2005-07-28 |
Optical information recording medium and optical information recording and reproducing apparatus App 20050163036 - Nishiuchi, Kenichi ;   et al. | 2005-07-28 |
Optical recording medium and recording method for the same App 20050163028 - Irie, Hiroaki ;   et al. | 2005-07-28 |
Optical information recording medium, and method and apparatus for recording/reproducing information thereon Grant 6,922,387 - Akiyama , et al. July 26, 2 | 2005-07-26 |
Method for optically recording information and device for optically recording information by the same App 20050157620 - Narumi, Kenji ;   et al. | 2005-07-21 |
Recording/reproducing apparatus for optical information recording medium and optical head App 20050135218 - Akiyama, Tetsuya ;   et al. | 2005-06-23 |
Method and apparatus for recording/reproducing information with respect to optical recording medium Grant 6,906,988 - Furukawa , et al. June 14, 2 | 2005-06-14 |
Optical information recording medium and method for manufacturing the medium App 20050122888 - Sakaue, Yoshitaka ;   et al. | 2005-06-09 |
Optical information recording medium, optical measuring method and optical information recording/reproducing method Grant 6,893,698 - Narumi , et al. May 17, 2 | 2005-05-17 |
Optical information recording medium with sector address information Grant 6,894,962 - Nishiuchi , et al. May 17, 2 | 2005-05-17 |
Recording/reproducing apparatus for optical information recording medium and optical head App 20050094532 - Akiyama, Tetsuya ;   et al. | 2005-05-05 |
Optical information recording medium, and method and apparatus for recording and reproduction App 20050088945 - Nishiuchi, Kenichi ;   et al. | 2005-04-28 |
Method of recording information, equipment thereof and information recording medium App 20050078594 - Takahashi, Katsuyuki ;   et al. | 2005-04-14 |
Optical information recording method, optical information recording equipment and optical information recording medium App 20050068870 - Narumi, Kenji ;   et al. | 2005-03-31 |
Optical information recording medium and method of manufacturing thereof, manufacturing apparatus, recording/reproducing method, and recording/reproducing apparatus App 20050030882 - Kusada, Hideo ;   et al. | 2005-02-10 |
Optical information recording medium, method of manufacturing thereof, and method of recording and reproduction App 20050007924 - Nishiuchi, Kenichi ;   et al. | 2005-01-13 |
Optical information recording medium manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus App 20040223445 - Nishiuchi, Kenichi ;   et al. | 2004-11-11 |
Optical information recording medium, method of manufacturing thereof, and method of recording and reproduction App 20040213126 - Nishiuchi, Kenichi ;   et al. | 2004-10-28 |
Optical information recording medium and method for initializing the same Grant 6,807,142 - Nagata , et al. October 19, 2 | 2004-10-19 |
Optical information recording medium with substrate and multiple information Grant 6,795,389 - Nishiuchi , et al. September 21, 2 | 2004-09-21 |
Optical information recording medium with plural information layers Grant 6,771,587 - Nishiuchi , et al. August 3, 2 | 2004-08-03 |
Optical recording method and optical recording device Grant 6,762,985 - Furukawa , et al. July 13, 2 | 2004-07-13 |
Optical information recording medium, and method and apparatus for recording/reproducing information thereon Grant 6,754,143 - Akiyama , et al. June 22, 2 | 2004-06-22 |
Recording and reproducing method for optical information recording medium and optical information recording medium Grant 6,744,724 - Nagata , et al. June 1, 2 | 2004-06-01 |
Optical information recording medium and optical information recording and reproducing apparatus App 20040090885 - Nishiuchi, Kenichi ;   et al. | 2004-05-13 |
Optical information recording medium, and method and apparatus for recording/reproducing information thereon App 20040090897 - Akiyama, Tetsuya ;   et al. | 2004-05-13 |
Optical information recording medium, optical recording and reproducing method and optical recording and reproducing apparatus App 20040085874 - Akiyama, Tetsuya ;   et al. | 2004-05-06 |
Method and apparatus for writing and reading optical recording medium Grant 6,711,105 - Narumi , et al. March 23, 2 | 2004-03-23 |
Recording and reproducing method of optical information recording medium Grant 6,707,776 - Nagata , et al. March 16, 2 | 2004-03-16 |
Method and apparatus for writing and reading optical recording medium Grant 6,700,849 - Narumi , et al. March 2, 2 | 2004-03-02 |
Optical information recording and reproducing system with overwrite capability and recording medium for use therewith Grant 6,697,313 - Nagata , et al. February 24, 2 | 2004-02-24 |
Substrate for optical recording medium, optical recording medium, master disc, master disc recording apparatus, and signal generating apparatus App 20040027950 - Nishiuchi, Kenichi ;   et al. | 2004-02-12 |
Optical information recording and reproducing system with overwrite capability and recording medium for use therewith Grant 6,683,739 - Nagata , et al. January 27, 2 | 2004-01-27 |
Optical information recording medium and optical information recording and reproducing apparatus Grant 6,667,937 - Nishiuchi , et al. December 23, 2 | 2003-12-23 |
Substrate for optical recording medium, optical recording medium, master disc, master disc recording apparatus, and signal generating apparatus Grant 6,661,749 - Nishiuchi , et al. December 9, 2 | 2003-12-09 |
Optical apparatus and method for producing the same App 20030219046 - Kitaoka, Yasuo ;   et al. | 2003-11-27 |
Optical information recording medium, manufacturing method therefor, manufacturing apparatus thereof and optical information recording and reproducing apparatus App 20030206504 - Nishiuchi, Kenichi ;   et al. | 2003-11-06 |
Recording and reproducing method for optical information recording medium and optical information recording medium App 20030198176 - Nagata, Ken?apos;Ichi ;   et al. | 2003-10-23 |
Optical recording method and optical recording device App 20030193867 - Furukawa, Shigeaki ;   et al. | 2003-10-16 |
Optical information recording medium, recording/reproducing apparatus and recording/reproducing method for the same, and method for manufacturing optical information recording medium App 20030185122 - Akiyama, Tetsuya ;   et al. | 2003-10-02 |
Optical information recording medium and optical information recording method, optical information recording device App 20030185121 - Narumi, Kenji ;   et al. | 2003-10-02 |
Optical recording medium having dual recording layers Grant 6,611,491 - Nishiuchi , et al. August 26, 2 | 2003-08-26 |
Optical information recording medium, optical measuring method and optical information recording/reproducing method App 20030134077 - Narumi, Kenji ;   et al. | 2003-07-17 |
Optical information recording and reproducing system with overwrite capability and recording medium for use therewith App 20030123365 - Nagata, Ken?apos;ichi ;   et al. | 2003-07-03 |
Recording and reproducing method of optical information recording medium App 20030107968 - Nagata, Ken?apos;ichi ;   et al. | 2003-06-12 |
Optical information recording medium and optical information recording and reproducing apparatus App 20030099169 - Nishiuchi, Kenichi ;   et al. | 2003-05-29 |
Optical information recording method, optical information recording and reproducing device, and optical information recording medium App 20030081523 - Miyagawa, Naoyasu ;   et al. | 2003-05-01 |
Optical recording medium, optical recording medium production method, optical recording medium production apparatus, program, and medium App 20030076775 - Sato, Shuji ;   et al. | 2003-04-24 |
Optical information recording and reproducing system with overwrite capability and recording medium for use therewith App 20030063541 - Nagata, Ken?apos;ichi ;   et al. | 2003-04-03 |
Optical recording medium, method for recording on optical record medium, and apparatus for recording on optical record medium App 20030058771 - Furukawa, Shigeaki ;   et al. | 2003-03-27 |
Optical Recording Medium Having An Area For Recording A Plurality Of Recording/reproduction Conditions To Be Used In Recording/reproduction Apparatuses And Recording/reproduction Method And Apparatus Therefor Grant 6,535,468 - Akiyama , et al. March 18, 2 | 2003-03-18 |
Method and apparatus for writing and reading optical recording medium App 20030031102 - Narumi, Kenji ;   et al. | 2003-02-13 |
Optical information recording medium, method for manufacturing the same, and initialization device App 20030012115 - Akiyama, Tetsuya ;   et al. | 2003-01-16 |
Optical information recording and reproducing system with overwrite capability and recording medium for use therewith Grant 6,487,151 - Nagata , et al. November 26, 2 | 2002-11-26 |
Method for recording information on optical recording medium and optical recording medium on which information is recorded App 20020172121 - Ohta, Takeo ;   et al. | 2002-11-21 |
Recording/reproduction apparatus, recording/reproduction method and information recording medium App 20020150005 - Nishiuchi, Kenichi | 2002-10-17 |
Optical information recording medium and reproducing apparatus with layer identification App 20020150032 - Nishiuchi, Kenichi ;   et al. | 2002-10-17 |
Optical information recording medium comprising a first layer having a phase that is reversibly changeable and a second information layer having a phase that is reversibly changeable Grant 6,456,584 - Nagata , et al. September 24, 2 | 2002-09-24 |
Optical information recording medium and optical information recording and reproducing apparatus App 20020114236 - Nishiuchi, Kenichi ;   et al. | 2002-08-22 |
Optical recording method and optical recording device App 20020080703 - Furukawa, Shigeaki ;   et al. | 2002-06-27 |
Optical Recording Medium Having An Area For Recording A Plurality Of Recording/reproduction Conditions To Be Used In Recording/reproduction Apparatuses And Recording/reproduction Method And Apparatus Therefor Grant 6,411,575 - Akiyama , et al. June 25, 2 | 2002-06-25 |
Optical Recording Medium Having An Area For Recording A Plurality Of Recording/reproduction Conditions To Be Used In Recording/reproduction Apparatuses And Recording/reproduction Method And Apparatus Therefor App 20020067670 - AKIYAMA, TETSUYA ;   et al. | 2002-06-06 |
Optical disk device and optical disk for recording and reproducing high-density signals Grant 6,343,062 - Furukawa , et al. January 29, 2 | 2002-01-29 |
Optical Information Recording Medium And Its Recording And Method App 20020001281 - KITAURA, HIDEKI ;   et al. | 2002-01-03 |
Optical information recording medium, and method and apparatus for recording/reproducing information thereon App 20010033543 - Akiyama, Tetsuya ;   et al. | 2001-10-25 |
Optical recording device for adjusting the rotation rate of recording medium during seeking operation Grant 6,172,946 - Furukawa , et al. January 9, 2 | 2001-01-09 |
Optical apparatus and method for producing the same Grant 5,835,650 - Kitaoka , et al. November 10, 1 | 1998-11-10 |
Optical recording medium having two separate recording layers Grant 5,764,619 - Nishiuchi , et al. June 9, 1 | 1998-06-09 |
Optical information recording medium Grant 5,745,475 - Ohno , et al. April 28, 1 | 1998-04-28 |
Optical information recording method and apparatus Grant 5,745,467 - Sakaue , et al. April 28, 1 | 1998-04-28 |
Optical information recording medium of phase change type having variably grooved tracks depending on their radial locations Grant 5,635,267 - Yamada , et al. June 3, 1 | 1997-06-03 |
Multilayer optical disk and apparatus Grant 5,627,816 - Ito , et al. May 6, 1 | 1997-05-06 |
Multilayer optical disk and apparatus Grant 5,563,873 - Ito , et al. October 8, 1 | 1996-10-08 |
Optical information recording medium and information recording and reproducing method thereof Grant 5,493,561 - Nishiuchi , et al. February 20, 1 | 1996-02-20 |
Optical information recording medium and method of designing its structure Grant 5,424,106 - Yamada , et al. June 13, 1 | 1995-06-13 |
Method of recording optical information with selective correction in pulse waveform and a recording system therefor Grant 5,412,626 - Ohno , et al. May 2, 1 | 1995-05-02 |
Optical information recording medium Grant 5,348,783 - Ohno , et al. September 20, 1 | 1994-09-20 |
Optical information recording method Grant 5,289,453 - Ohno , et al. February 22, 1 | 1994-02-22 |
Optical information recording medium, method of making an optical information recording medium and method of recording/reproducing optical information Grant 5,273,861 - Yamada , et al. December 28, 1 | 1993-12-28 |
Optical information recording medium and information recording and reproducing method therefor Grant 5,249,175 - Akahira , et al. September 28, 1 | 1993-09-28 |
Method and apparatus for timing variable optical information recording Grant 5,216,657 - Nishiuchi , et al. June 1, 1 | 1993-06-01 |
Optical information recording medium Grant 5,154,957 - Yamada , et al. October 13, 1 | 1992-10-13 |
Optical information recording apparatus for recording an input signal having variable width pulse duration and pulse spacing periods Grant 5,150,351 - Ohno , et al. September 22, 1 | 1992-09-22 |
Optical recording medium and optical recording/reproducing apparatus Grant 5,097,464 - Nishiuchi , et al. March 17, 1 | 1992-03-17 |
Optical recording medium Grant 4,935,336 - Yamada , et al. * June 19, 1 | 1990-06-19 |
Method for recording, reproducing and erasing optical information Grant 4,710,911 - Yamada , et al. December 1, 1 | 1987-12-01 |
Recording medium and recording system Grant 4,383,029 - Yamada , et al. May 10, 1 | 1983-05-10 |