Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7961583 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2011-06-14 |
| 7924681 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2011-04-12 |
| 7889617 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2011-02-15 |
| 7668065 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2010-02-23 |
| 7366078 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2008-04-29 |
| 7342851 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2008-03-11 |
| 7173895 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2007-02-06 |
| 7173896 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2007-02-06 |
| 7173897 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2007-02-06 |
| 7164625 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2007-01-16 |
| 7151735 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2006-12-19 |
| 6950384 | Optical pickup appratus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2005-09-27 |
| 6870805 | Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method | Norikazu Arai, Toshiyuki Kojima, Kohei Ota, Shinichiro Saito | 2005-03-22 |
| 6429972 | Diffraction lens | Kohei Ota | 2002-08-06 |
| 6349083 | Near field type optical disk recording reproducing apparatus, optical information recording medium recording reproducing apparatus, pickup apparatus, objective lens | Kohei Ota | 2002-02-19 |
| 6219446 | Image forming apparatus and manufacturing method of lens fitted film unit | Tsuyoshi Haraguchi, Nobuyoshi Mori, Takao Hosaka, Tetsufumi Takaba | 2001-04-17 |
| 5774279 | Retrofoucus photographic lens | Tsutomu Kawano | 1998-06-30 |
| 5541775 | Optical system including a distributed index optical element in combination with a lens having a homogeneous refractive index | — | 1996-07-30 |
| 5422866 | Magneto-optical head with birefringent polarizer | Susumu Yamaguchi, Katsuya Yagi | 1995-06-06 |
| 5414560 | Single lens | — | 1995-05-09 |
| 4495345 | Optical element and optical polycarbonate resin composition for the preparation thereof | Sota Kawakami, Hideki Murata, Satoshi Matsunaga | 1985-01-22 |