Kajiyama; Seiji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Kajiyama; Seiji.The latest application filed is for "optical pickup apparatus".

Company Profile

0.17.12

Kajiyama; Seiji - Gifu JP
Kajiyama; Seiji - Ibi-Gun 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
Optical pickup device and method of laying out the same Grant 7,903,507 - Nagatomi , et al. March 8, 2	2011-03-08
Optical pickup device capable of handling a plurality of laser light beams having different wavelengths Grant 7,782,735 - Nagatomi , et al. August 24, 2	2010-08-24
Optical pickup device Grant 7,609,606 - Nagatomi , et al. October 27, 2	2009-10-27
Optical Pickup Apparatus App 20090245072 - Asano; Kenji ; et al.	2009-10-01
Optical pickup device Grant 7,558,184 - Nagatomi , et al. July 7, 2	2009-07-07
Optical pickup device Grant 7,525,897 - Nagatomi , et al. April 28, 2	2009-04-28
Optical pickup device Grant 7,420,894 - Nagatomi , et al. September 2, 2	2008-09-02
Semiconductor laser apparatus and optical pickup apparatus Grant 7,376,166 - Hata , et al. May 20, 2	2008-05-20
Optical pickup device and method of laying out the same App 20070147198 - Nagatomi; Kenji ; et al.	2007-06-28
Optical pickup device App 20070115767 - Nagatomi; Kenji ; et al.	2007-05-24
Optical pickup device and recording and/or reproducing device Grant 7,209,415 - Nagatomi , et al. April 24, 2	2007-04-24
Semiconductor laser apparatus and optical pickup apparatus App 20060251138 - Hata; Masayuki ; et al.	2006-11-09
Optical pickup device App 20060140078 - Nagatomi; Kenji ; et al.	2006-06-29
Optical pickup device App 20060126673 - Nagatomi; Kenji ; et al.	2006-06-15
Optical pickup device App 20060083147 - Nagatomi; Kenji ; et al.	2006-04-20
Optical pickup device App 20060077860 - Nagatomi; Kenji ; et al.	2006-04-13
Optical pickup device App 20050254391 - Nagatomi, Kenji ; et al.	2005-11-17
Optical pickup device and recording and/or reproducing device App 20040081058 - Nagatomi, Kenji ; et al.	2004-04-29
Magneto-optical Disk Apparatus Capable Of Accurate Reproduction Of Signal By Removing Magnetic Influence By Magnet Included In Optical Head And Method Of Detecting Intensity Of Magnetic Field Applied By Magnet Grant 6,693,856 - Shidochi , et al. February 17, 2	2004-02-17
Optical pickup compatible with a plurality of types of optical disks having different thicknesses Grant 6,574,182 - Yamada , et al. June 3, 2	2003-06-03
Optical head for two different disk thicknesses with a light beam diameter control device Grant 6,552,990 - Kajiyama , et al. April 22, 2	2003-04-22
Magneto-optical disk apparatus capable of accurate reproduction of signal by removing magnetic influence by magnet included in optical head and method of detecting intensity of magnetic field applied by magnet App 20020034128 - Shidochi, Masaaki ; et al.	2002-03-21
Optical Disk Recording/reproduction Apparatus For Recording/reproducing Information To/from Optical Disk Of Different Standards App 20010048809 - KAJIYAMA, SEIJI ; et al.	2001-12-06
Optical recording disc capable of preventing illegal copy Grant 6,262,967 - Kajiyama , et al. July 17, 2	2001-07-17
Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom Grant 6,201,777 - Tsuchiya , et al. March 13, 2	2001-03-13
Optical pickup device and wavelength selective diffraction grating Grant 6,181,668 - Kajiyama , et al. January 30, 2	2001-01-30
Optical Disc cd recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards Grant 6,167,019 - Tsuchiya , et al. December 26, 2	2000-12-26
Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards Grant 6,049,518 - Tsuchiya , et al. April 11, 2	2000-04-11
Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom Grant 5,917,791 - Tsuchiya , et al. June 29, 1	1999-06-29

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