Katayama; Ryuichi

Patent Applications and Registrations

Patent applications and USPTO patent grants for Katayama; Ryuichi.The latest application filed is for "device and recording apparatus".

Company Profile

0.50.69

Katayama; Ryuichi - Fukuoka JP
Katayama; Ryuichi - Minato-ku N/A JP
Katayama; Ryuichi - Tokyo JP
Katayama; Ryuichi - Mintato-ku N/A 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
Device and recording apparatus Grant 10,079,032 - Katayama , et al. September 18, 2	2018-09-18
Device And Recording Apparatus App 20170140778 - KATAYAMA; Ryuichi ; et al.	2017-05-18
Light emitting element having structural bodies arrayed at a first pitch along a first direction and arrayed at a second pitch different from said first pitch along a second direction and projection display device provided with same Grant 9,028,070 - Tomiyama , et al. May 12, 2	2015-05-12
Polarized light emitting element for display apparatus Grant 9,016,883 - Katayama April 28, 2	2015-04-28
Light emitting element and image display apparatus using the light emitting element Grant 8,866,172 - Katayama October 21, 2	2014-10-21
Wavelength plate, light emitting element, and image display device using the light emitting element Grant 8,807,769 - Katayama August 19, 2	2014-08-19
Light emitting element and image display device using the light emitting element Grant 8,779,454 - Katayama July 15, 2	2014-07-15
Light emitting element and image display apparatus using the light emitting element Grant 8,643,050 - Katayama February 4, 2	2014-02-04
Wavelength Plate, Light Emitting Element, And Image Display Device Using The Light Emitting Element App 20130021773 - Katayama; Ryuichi	2013-01-24
Light Emitting Element And Image Display Apparatus Using The Light Emitting Element App 20130021774 - Katayama; Ryuichi	2013-01-24
Light Source Unit And Image Display Device App 20130016139 - Tomiyama; Mizuho ; et al.	2013-01-17
Light Emitting Element And Image Display Device Using The Light Emitting Element App 20120280265 - Katayama; Ryuichi	2012-11-08
Light Emitting Element And Projection Display Device Provided With Same App 20120224147 - Tomiyama; Mizuho ; et al.	2012-09-06
Light Emitting Element And Image Display Apparatus Using The Light Emitting Element App 20120217529 - Katayama; Ryuichi	2012-08-30
Optical information recording/ reproducing apparatus and optical information recording and reproducing method Grant 8,254,238 - Katayama August 28, 2	2012-08-28
Light Emitting Element And Image Display Apparatus Using The Light Emitting Element App 20120199855 - Katayama; Ryuichi	2012-08-09
Optical information recording/reproducing device, optical unit, and optical information recording method Grant 8,238,219 - Tominaga , et al. August 7, 2	2012-08-07
Optical Information Recording/ Reproducing Apparatus And Optical Information Recording And Reproducing Method App 20120075977 - Katayama; Ryuichi	2012-03-29
Optical information recording/ reproducing device and optical information recording/ reproducing method Grant 8,045,442 - Katayama October 25, 2	2011-10-25
Optical head device for detecting an error signal and an optical information recording/reproducing device Grant 8,036,092 - Katayama October 11, 2	2011-10-11
Optical head apparatus and optical information recording/reproducing apparatus Grant 7,948,854 - Katayama May 24, 2	2011-05-24
Optical Unit, Control Method, And Optical Information Recording/reproducing Device App 20110110207 - Katayama; Ryuichi	2011-05-12
Optical Information Recording/reproducing Device, Optical Unit, And Optical Information Recording Method App 20110026390 - Tominaga; Shin ; et al.	2011-02-03
Optical head device and optical information recording/reproducing device App 20100309770 - Katayama; Ryuichi	2010-12-09
Optical Head Device and Optical Information Recording/Reproducing Device App 20100226234 - Katayama; Ryuichi	2010-09-09
Optical Head Device, Optical Information Recording/reproducing Device, And Optical Information Recording/reproducing Method App 20100220577 - Katayama; Ryuichi	2010-09-02
Optical head apparatus and optical information recording or reproducing apparatus Grant 7,787,348 - Katayama August 31, 2	2010-08-31
Method for detecting radial tilt of optical recording medium in optical head device, optical head device, and optical information recording/reproducing device Grant 7,755,991 - Katayama July 13, 2	2010-07-13
Optical Head Device And Optical Information Recording Or Reproducing Device App 20100142355 - Katayama; Ryuichi	2010-06-10
Optical head device and optical recording and reproducing apparatus Grant 7,715,296 - Katayama May 11, 2	2010-05-11
Optical head device and optical information recording or reproducing device Grant 7,710,849 - Katayama May 4, 2	2010-05-04
Optical Head Device And Optical Information Recording/reproducing Device App 20100085495 - Katayama; Ryuichi	2010-04-08
Optical Head Device, And Optical Information Recording/reproducing Device And Optical Information Recording/reproducing Method Using The Same App 20100085860 - Katayama; Ryuichi	2010-04-08
Optical Head Device And Optical Information Recording/reproducing Device App 20100074077 - Katayama; Ryuichi	2010-03-25
Optical Head Unit And Optical Information Recording/reproducing Apparatus App 20100061217 - Katayama; Ryuichi	2010-03-11
Optical Head Unit And Optcal Information Recording/reproducing Apparatus App 20100061216 - Katayama; Ryuichi	2010-03-11
Optical Recording Medium, Optical Head Device And Optical Information Recording/reproducing Device App 20100046353 - Katayama; Ryuichi	2010-02-25
Optical Head Device, Optical Information Recording/reproducing Device And Error Signal Generation Method App 20100027384 - Katayama; Ryuichi	2010-02-04
Optical Head Device, Optical Information Recording/reproducing Device, And Optical Information Recording/reproducing Method Thereof App 20100019126 - Katayama; Ryuichi	2010-01-28
Optical Head Device And Optical Information Recording Or Reproducing Apparatus With The Same App 20090290473 - Katayama; Ryuichi	2009-11-26
Optical head device, optical information recording/reproducing apparatus and operation method of optical information recording/reproducing apparatus Grant 7,622,696 - Katayama November 24, 2	2009-11-24
Optical Head Unit And Optical Information Recording/reproducing Apparatus App 20090274020 - Katayama; Ryuichi	2009-11-05
Optical Head Device And Optical Information Recording Or Reproducing Apparatus App 20090257339 - KATAYAMA; Ryuichi	2009-10-15
Optical Information Recording/ Reproducing Device And Optical Information Recording/ Reproducing Method App 20090252011 - Katayama; Ryuichi	2009-10-08
Optical head device and optical information recording/reproduction apparatus Grant 7,599,276 - Katayama October 6, 2	2009-10-06
Optical head device and optical information reproducing device App 20090190457 - Katayama; Ryuichi	2009-07-30
Optical head device and optical information recording or reproducing device Grant 7,564,762 - Katayama July 21, 2	2009-07-21
Optical Head And Optical Information Recorder/reproducer Employing It App 20090147658 - Katayama; Ryuichi	2009-06-11
Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus Grant 7,542,401 - Katayama June 2, 2	2009-06-02
Optical Head Device, Optical Information Recording/Reproducing Apparatus and Operation Method of Optical Information Recording/Reproducing Apparatus App 20090121117 - Katayama; Ryuichi	2009-05-14
Optical system for detecting data signal and tracking error signal including polarizing optical element App 20090052301 - Katayama; Ryuichi	2009-02-26
Optical Head Device And Optical Information Recording Or Reproducing Apparatus Equipped With Same App 20090046554 - Katayama; Ryuichi	2009-02-19
Optical Head Apparatus And Optical Information Recording/reproducing Apparatus App 20090046548 - Katayama; Ryuichi	2009-02-19
Optical Head Device And Optical Recording And Reproducing Apparatus App 20090016198 - Katayama; Ryuichi	2009-01-15
Optical Head Device And Optical Recording And Reproducing Apparatus App 20080273445 - Katayama; Ryuichi	2008-11-06
Optical head apparatus and optical information recording or reproducing apparatus App 20080224028 - Katayama; Ryuichi	2008-09-18
Optical Head Apparatus and Optical Information Recording or Reproducing Apparatus Having the Same App 20080205243 - Katayama; Ryuichi	2008-08-28
Optical head device and optical recording and reproducing apparatus Grant 7,414,951 - Katayama August 19, 2	2008-08-19
Optical head device and optical information recording/reproducing device Grant 7,411,882 - Katayama August 12, 2	2008-08-12
Optical disk device for detecting thickness errors of the transparent substrate Grant 7,355,932 - Shirakawa , et al. April 8, 2	2008-04-08
Optical disk medium and optical disk recording/reproducing apparatus utilizing tilt detection areas having special marks Grant 7,336,576 - Yamanaka , et al. February 26, 2	2008-02-26
Radial tilt compensating optical disk apparatus using tracking control loop gain Grant 7,327,643 - Iwazawa , et al. February 5, 2	2008-02-05
Optical Head Apparatus and Optical Information Recording/Reproducing Apparatus With the Same App 20070263518 - Katayama; Ryuichi	2007-11-15
Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus Grant 7,272,091 - Katayama September 18, 2	2007-09-18
Birefringence Characteristic Measuring Method, Optical Recording Medium And Optical Information Recording/reproducing Apparatus App 20070214468 - KATAYAMA; Ryuichi	2007-09-13
Optical head unit and optical information writing/reading device Grant 7,242,647 - Katayama July 10, 2	2007-07-10
Radial tilt detection optical head apparatus and optical information apparatus Grant 7,200,076 - Katayama April 3, 2	2007-04-03
Optical head device and optical information recording/reproducing device App 20060280101 - Katayama; Ryuichi	2006-12-14
Optical head device and optical information recording/reproducing apparatus Grant 7,136,344 - Katayama November 14, 2	2006-11-14
Optical head device and optical information recording or reproducing device Grant 7,085,218 - Katayama August 1, 2	2006-08-01
Optical head device and optical recording and reproducing apparatus App 20060104187 - Katayama; Ryuichi	2006-05-18
Optical head device, method of manufacturing the same, and optical information recording and/or playback apparatus App 20060007835 - Katayama; Ryuichi	2006-01-12
Optical head apparatus including two light sources and one photodetector Grant 6,980,505 - Katayama , et al. December 27, 2	2005-12-27
Optical head device and optical information recording or reproducing device App 20050274870 - Katayama, Ryuichi	2005-12-15
Optical head device and optical information recording or reproducing device App 20050276206 - Katayama, Ryuichi	2005-12-15
Optical head device and optical information recording/reproduction apparatus App 20050259553 - Katayama, Ryuichi	2005-11-24
Optical head apparatus and optical information recording and reproducing apparatus Grant 6,963,522 - Katayama November 8, 2	2005-11-08
Optical head device and optical information recording or reproducing apparatus App 20050135220 - Katayama, Ryuichi	2005-06-23
Optical system for detecting data signal and tracking error signal App 20050135207 - Katayama, Ryuichi	2005-06-23
Optical head device and optical information recording/reproducing apparatus App 20050128896 - Katayama, Ryuichi	2005-06-16
Optical disk medium and optical disk recording/reproducing apparatus App 20050111344 - Yamanaka, Yutaka ; et al.	2005-05-26
Optical system for detecting data signal and tracking error signal Grant 6,894,958 - Katayama May 17, 2	2005-05-17
Optical head apparatus and optical information recording or reproducing apparatus App 20050087678 - Katayama, Ryuichi	2005-04-28
Optical head assembly and optical information recording/reproducing device Grant 6,804,180 - Katayama October 12, 2	2004-10-12
Optical head and optical data recording/reproducing apparatus using the same Grant 6,788,628 - Katayama September 7, 2	2004-09-07
Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus App 20040095865 - Katayama, Ryuichi	2004-05-20
Optical head unit and optical information writing/reading device App 20040090901 - Katayama, Ryuichi	2004-05-13
Optical head and optical information recording and playback apparatus Grant 6,707,773 - Katayama March 16, 2	2004-03-16
Method for detecting radial tilt of optical recording medium in optical head device, optical head device, and optical information recording/reproducing device App 20030218949 - Katayama, Ryuichi	2003-11-27
Radial tilt compensating optical disk apparatus using tracking control loop gain App 20030147315 - Iwazawa, Naotoshi ; et al.	2003-08-07
Optical head and optical information recording/reproducing device Grant 6,594,206 - Katayama July 15, 2	2003-07-15
Radial tilt detection optical head apparatus and optical information apparatus App 20030095485 - Katayama, Ryuichi	2003-05-22
Optical System For Detecting Data Signal And Tracking Error Signal App 20030058759 - KATAYAMA, RYUICHI	2003-03-27
Optical head apparatus including two light sources and one photodetector App 20030053397 - Katayama, Ryuichi ; et al.	2003-03-20
Optical head apparatus and optical information recording and reproducing apparatus App 20030012092 - Katayama, Ryuichi	2003-01-16
Optical head apparatus and optical information recording and reproducing apparatus App 20020181353 - Katayama, Ryuichi	2002-12-05
Optical head device and optical recording and reproducing apparatus App 20020181366 - Katayama, Ryuichi	2002-12-05
Optical head device and optical information recording/reproducing device App 20020145965 - Katayama, Ryuichi	2002-10-10
Optical head and optical information recording/reproducing device App 20020126588 - Katayama, Ryuichi	2002-09-12
Optical disk device App 20020114231 - Shirakawa, Hidekazu ; et al.	2002-08-22
Optical head and optical data recording/reproducing apparatus using the same App 20020075775 - Katayama, Ryuichi	2002-06-20
Optical head and optical information recording and playback apparatus App 20010036137 - Katayama, Ryuichi	2001-11-01
Optical head assembly and optical information recording/reproducing device App 20010030917 - Katayama, Ryuichi	2001-10-18
Optical head with a phase plate for different types of disks Grant 6,201,780 - Katayama March 13, 2	2001-03-13
Polarization beam splitter and method for making the same Grant 6,046,851 - Katayama April 4, 2	2000-04-04
Optical head device Grant 5,875,167 - Katayama February 23, 1	1999-02-23
Optical head apparatus for different types of disks Grant 5,696,750 - Katayama December 9, 1	1997-12-09
Optical head system having super resolution element Grant 5,600,614 - Katayama February 4, 1	1997-02-04
Head device for magneto-optical disk Grant 5,570,333 - Katayama October 29, 1	1996-10-29
Magneto-optical head system for detection of error and information signals by diffraction lights Grant 5,453,963 - Katayama , et al. September 26, 1	1995-09-26