Kikugawa; Atsushi

Patent Applications and Registrations

Patent applications and USPTO patent grants for Kikugawa; Atsushi.The latest application filed is for "channel bitword prosessor, prml decoder, and optical information recording/reproducing device".

Company Profile

0.60.53

Kikugawa; Atsushi - Mishima-gun JP
Kikugawa; Atsushi - Osaka N/A JP
Kikugawa; Atsushi - Tokyo JP
Kikugawa; Atsushi - Hiratsuka JP
Kikugawa; Atsushi - Higashimurayama JP
Kikugawa; Atsushi - Kokubunji JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method for recovering heavy rare earth element Grant 10,233,516 - Miyamoto , et al.	2019-03-19
Method for recovering rare earth element Grant 10,081,040 - Miyamoto , et al. September 25, 2	2018-09-25
Method for producing R-Fe-B based permanent magnet alloy recycled material having removed carbon Grant 9,657,367 - Furusawa , et al. May 23, 2	2017-05-23
Method and system for separating rare earth elements Grant 9,435,009 - Yamamoto , et al. September 6, 2	2016-09-06
Method for recovering rare earth element Grant 9,322,082 - Hoshi , et al. April 26, 2	2016-04-26
Corrosion-resistant magnet and method for producing the same Grant 9,275,794 - Kikugawa , et al. March 1, 2	2016-03-01
Channel Bitword Prosessor, Prml Decoder, And Optical Information Recording/reproducing Device App 20160027468 - KIKUGAWA; Atsushi	2016-01-28
Method For Recovering Heavy Rare Earth Element App 20150361526 - MIYAMOTO; Yu ; et al.	2015-12-17
Method For Recovering Rare Earth Element App 20150344991 - MIYAMOTO; Yu ; et al.	2015-12-03
Method for producing surface-modified rare earth metal-based sintered magnet and surface-modified rare earth metal-based sintered magnet Grant 9,175,376 - Fujihara , et al. November 3, 2	2015-11-03
Method and System for Separating Rare Earth Elements App 20150292059 - Yamamoto; Hiroki ; et al.	2015-10-15
Channel bitword processor, PRML decoder, and optical information recording/reproducing device Grant 9,070,412 - Kikugawa June 30, 2	2015-06-30
Optical information reproduction apparatus using homodyne phase diversity detection with improved SNR Grant 8,958,278 - Kurokawa , et al. February 17, 2	2015-02-17
Information recording method, information reading method, and optical disc device Grant 8,958,277 - Kikugawa , et al. February 17, 2	2015-02-17
Channel Bitword Processor, Prml Decoder, And Optical Information Recording/reproducing Device App 20150043321 - KIKUGAWA; Atsushi	2015-02-12
Modulation/demodulation Method, Demodulation Apparatus, And Code Modulation Method App 20140344642 - KIKUGAWA; Atsushi	2014-11-20
Optical information recording medium, recording and reproduction method, and recording and reproduction device Grant 8,804,476 - Kikugawa August 12, 2	2014-08-12
Method For Recovering Rare Earth Element App 20140186239 - Hoshi; Hiroyuki ; et al.	2014-07-03
Method For Producing R-fe-b Based Permanent Magnet Alloy Recylced Material Having Removed Carbon App 20140123809 - Furusawa; Katsuyoshi ; et al.	2014-05-08
Read signal evaluation method, information recording and reading method, and information recording and reading apparatus Grant 8,705,328 - Kikugawa April 22, 2	2014-04-22
Optical Information Recording Medium, Recording And Reproduction Method, And Recording And Reproduction Device App 20140036652 - KIKUGAWA; Atsushi	2014-02-06
Method for producing rare earth metal-based permanent magnet Grant 8,641,832 - Kikugawa , et al. February 4, 2	2014-02-04
Optical Information Reproduction Apparatus App 20140029405 - KUROKAWA; Takahiro ; et al.	2014-01-30
Optical information recording medium, optical information recording and reproducing device, and recording method Grant 8,588,048 - Kikugawa November 19, 2	2013-11-19
Optical disk apparatus Grant 8,379,497 - Kikugawa February 19, 2	2013-02-19
Read Signal Evaluation Method, Information Recording And Reading Method, And Information Recording And Reading Apparatus App 20120213049 - KIKUGAWA; Atsushi	2012-08-23
High-speed optical disk drive Grant 8,243,573 - Kikugawa August 14, 2	2012-08-14
Information Recording Method, Information Reading Method, And Optical Disc Device App 20120134247 - Kikugawa; Atsushi ; et al.	2012-05-31
R-Fe-B based sintered magnet having on the surface thereof vapor deposited film of aluminum or alloy thereof, and method for producing the same Grant 8,163,106 - Kikugawa , et al. April 24, 2	2012-04-24
Offset compensator and optical disc drive using the same Grant 8,089,845 - Kikugawa January 3, 2	2012-01-03
Optical disc drive Grant 8,085,633 - Kikugawa December 27, 2	2011-12-27
Corrosion-resistant Magnet And Method For Producing The Same App 20110273252 - Kikugawa; Atsushi ; et al.	2011-11-10
Signal conversion module and optical disc apparatus using the same Grant 8,045,431 - Kikugawa October 25, 2	2011-10-25
Optical disk apparatus Grant 7,969,838 - Kikugawa June 28, 2	2011-06-28
Information read device and read signal processing circuit Grant 7,945,002 - Kikugawa , et al. May 17, 2	2011-05-17
Optical Disc Drive App 20110080822 - KIKUGAWA; Atsushi	2011-04-07
Optical disk device and integrated circuit used therein Grant 7,889,607 - Kikugawa , et al. February 15, 2	2011-02-15
Optical disc apparatus with adjustable constraint length PRML Grant 7,852,729 - Minemura , et al. December 14, 2	2010-12-14
Optical disk apparatus and playback signal processing method Grant 7,852,722 - Kikugawa , et al. December 14, 2	2010-12-14
R-fe-b Based Sintered Magnet Having On The Surface Thereof Vapor Deposited Film Of Aluminum Or Alloy Thereof, And Method For Producing The Same App 20100295644 - Kikugawa; Atsushi ; et al.	2010-11-25
Method For Producing Surface-modified Rare Earth Metal-based Sintered Magnet And Surface-modified Rare Earth Metal-based Sintered Magnet App 20100252145 - Fujihara; Mahoro ; et al.	2010-10-07
Optical disc drive provided with envelope defect detection function Grant 7,791,993 - Kikugawa , et al. September 7, 2	2010-09-07
Optical Disk Apparatus App 20100085858 - KIKUGAWA; Atsushi	2010-04-08
Signal Conversion Module And Optical Disc Apparatus Using The Same App 20100027390 - KIKUGAWA; Atsushi	2010-02-04
Method For Producing Rare Earth Metal-based Permanent Magnet App 20100006182 - Kikugawa; Atsushi ; et al.	2010-01-14
Optical disk apparatus and PLL circuit Grant 7,616,726 - Minemura , et al. November 10, 2	2009-11-10
High-speed Optical Disk Drive App 20090196156 - Kikugawa; Atsushi	2009-08-06
Information Read Device And Read Signal Processing Circuit App 20090136219 - Kikugawa; Atsushi ; et al.	2009-05-28
Offset Compensator And Optical Disc Drive Using The Same App 20090135699 - KIKUGAWA; Atsushi	2009-05-28
Optical Disk Medium, Information Recording Method, And Optical Disk Drive App 20090103418 - Kikugawa; Atsushi	2009-04-23
Optical Information Reproducing Method, Optical Information Reproducing Apparatus And Optical Information Recording Medium App 20090086602 - Ushiyama; Junko ; et al.	2009-04-02
Information read device and read signal processing circuit Grant 7,483,478 - Kikugawa , et al. January 27, 2	2009-01-27
Read Signal Processing Circuit, Read Signal Processing Method, And Optical Disc Drive App 20080284630 - Kikugawa; Atsushi ; et al.	2008-11-20
Read signal processing circuit, read signal processing method, and optical disc drive Grant 7,446,685 - Kikugawa , et al. November 4, 2	2008-11-04
Magnetic hard disk drive with countermeasure against spike noise Grant 7,428,115 - Nakagawa , et al. September 23, 2	2008-09-23
Optical Disk Apparatus App 20080219132 - KIKUGAWA; ATSUSHI	2008-09-11
Perpendicular magnetic recording media, magnetic recording apparatus Grant 7,399,540 - Futamoto , et al. July 15, 2	2008-07-15
Optical disc drive provided with envelope defect detection function App 20080130442 - Kikugawa; Atsushi ; et al.	2008-06-05
Perpendicular magnetic recording media Grant 7,316,852 - Tanahashi , et al. January 8, 2	2008-01-08
Stray field detector, magnetic disk drive, and method of head escaping Grant 7,289,284 - Arai , et al. October 30, 2	2007-10-30
Optical disk apparatus and playback signal processing method App 20070242580 - Kikugawa; Atsushi ; et al.	2007-10-18
Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus Grant 7,217,467 - Arai , et al. May 15, 2	2007-05-15
Optical disk device and integrated circuit used therein App 20070053262 - Kikugawa; Atsushi ; et al.	2007-03-08
Perpendicular magnetic recording media, magnetic recording apparatus App 20070037018 - Futamoto; Masaaki ; et al.	2007-02-15
Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same Grant 7,153,546 - Tanahashi , et al. December 26, 2	2006-12-26
Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic storage apparatus using the same Grant 7,153,596 - Tanahashi , et al. December 26, 2	2006-12-26
Information read device and read signal processing circuit App 20060280240 - Kikugawa; Atsushi ; et al.	2006-12-14
Perpendicular magnetic recording media, magnetic recording apparatus Grant 7,147,941 - Futamoto , et al. December 12, 2	2006-12-12
Perpendicular magnetic recording media and magnetic storage Grant 7,138,195 - Tanahashi , et al. November 21, 2	2006-11-21
Optical disk apparatus and PLL circuit App 20060203949 - Minemura; Hiroyuki ; et al.	2006-09-14
Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same Grant 7,041,393 - Tanahashi , et al. May 9, 2	2006-05-09
Optical disc apparatus App 20060087947 - Minemura; Hiroyuki ; et al.	2006-04-27
Method for testing or recording servo signal on perpendicular magnetic recording media Grant 7,026,810 - Kikugawa , et al. April 11, 2	2006-04-11
Stray field detector, magnetic disk drive, and method of head escaping App 20060028747 - Arai; Reiko ; et al.	2006-02-09
Magnetic hard disk drive with countermeasure against spike noise App 20050233177 - Nakagawa, Takeshi ; et al.	2005-10-20
Method for testing or recording servo signal on perpendicular magnetic recording media App 20050204285 - Kikugawa, Atsushi ; et al.	2005-09-15
Method for testing or recording servo signal on perpendicular magnetic recording media Grant 6,894,488 - Kikugawa , et al. May 17, 2	2005-05-17
Rare earth metal-based permanent magnet having corrosion-resistant film and method for producing the same Grant 6,884,513 - Kikugawa , et al. April 26, 2	2005-04-26
Rare earth metal-based permanent magnet having corrosion-resistant film and method for producing the same Grant 6,878,217 - Kikugawa , et al. April 12, 2	2005-04-12
Perpendicular magnetic recording media App 20050042479 - Tanahashi, Kiwamu ; et al.	2005-02-24
Perpendicular magnetic recording media and magnetic storage apparatus using the same Grant 6,858,330 - Tanahashi , et al. February 22, 2	2005-02-22
Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic storage apparatus using the same App 20040234818 - Tanahashi, Kiwamu ; et al.	2004-11-25
Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus App 20040233565 - Arai, Reiko ; et al.	2004-11-25
Perpendicular magnetic recording media Grant 6,808,824 - Tanahashi , et al. October 26, 2	2004-10-26
Perpendicular magnetic recording media and magnetic storage App 20040197607 - Tanahashi, Kiwamu ; et al.	2004-10-07
Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same App 20040170798 - Tanahashi, Kiwamu ; et al.	2004-09-02
Perpendicular magnetic recording media and magnetic storage apparatus using the same Grant 6,759,148 - Tanahashi , et al. July 6, 2	2004-07-06
Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same Grant 6,723,457 - Tanahashi , et al. April 20, 2	2004-04-20
Perpendicular magnetic recording media, magnetic recording apparatus App 20040062953 - Futamoto, Masaaki ; et al.	2004-04-01
Perpendicular magnetic recording media, magnetic recording apparatus Grant 6,686,070 - Futamoto , et al. February 3, 2	2004-02-03
Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same App 20040009375 - Tanahashi, Kiwamu ; et al.	2004-01-15
Magnetic disk apparatus, magnetic recording medium and method of servo waiting App 20030142435 - Tomiyama, Futoshi ; et al.	2003-07-31
Rare earth metal-based permanent magnet having corrosion-resistant film and method for producing the same App 20030136471 - Kikugawa, Atsushi ; et al.	2003-07-24
Perpendicular magnetic recording media App 20030099868 - Tanahashi, Kiwamu ; et al.	2003-05-29
Method for testing or recording servo signal on perpendicular magnetic recording media App 20030053235 - Kikugawa, Atsushi ; et al.	2003-03-20
Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same App 20020197514 - Tanahashi, Kiwamu ; et al.	2002-12-26
Perpendicular magnetic recording media and magnetic storage apparatus using the same App 20020122958 - Tanahashi, Kiwamu ; et al.	2002-09-05
Perpendicular magnetic recording media and magnetic storage apparatus using the same App 20020048693 - Tanahashi, Kiwamu ; et al.	2002-04-25
Rare earth metal-based permanent magnet having corrosion-resistant film and method for producing the same App 20020036029 - Kikugawa, Atsushi ; et al.	2002-03-28
Surface atom fabrication method and apparatus Grant 5,689,494 - Ichikawa , et al. November 18, 1	1997-11-18
Scanning probe microscope and method of control error correction Grant 5,467,642 - Hosaka , et al. November 21, 1	1995-11-21
Surface observing apparatus and method Grant 5,436,448 - Hosaka , et al. July 25, 1	1995-07-25
Surface atom fabrication method and apparatus Grant 5,416,331 - Ichikawa , et al. May 16, 1	1995-05-16

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