Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12411352 | Composite diffraction element, instrument, and image projection system | — | 2025-09-09 |
| 11445166 | Image projection system, image projection apparatus, image display light diffraction optical element, tool, and image projection method | — | 2022-09-13 |
| 8411548 | Optical pickup and optical disc apparatus | Katsuhiro Seo, Tamotsu Ishii | 2013-04-02 |
| 8289826 | Optical pickup and optical disc apparatus | Midori Kanaya, Katsuhiro Seo, Tamotsu Ishii | 2012-10-16 |
| 7927896 | Method of production of semiconductor light emission device and method of production of light emission apparatus | — | 2011-04-19 |
| 7929076 | Optical module and optical pickup apparatus | — | 2011-04-19 |
| 7579204 | Method of production of semiconductor light emission device and method of production of light emission apparatus | — | 2009-08-25 |
| 7525895 | Semiconductor integrated device | — | 2009-04-28 |
| 7505500 | Laser diode and method of manufacturing the same | — | 2009-03-17 |
| 6893888 | Production method of semiconductor laser apparatus | — | 2005-05-17 |
| 6867366 | Semiconductor integrated apparatus | — | 2005-03-15 |
| 6787381 | Semiconductor laser and method of production of the same | — | 2004-09-07 |
| 6680958 | Semiconductor laser and method of production of the same | — | 2004-01-20 |
| 6643310 | Semiconductor laser apparatus, laser coupler, data reproduction apparatus, data recording apparatus and production method of semiconductor laser apparatus | — | 2003-11-04 |
| 6621775 | Optical head, optical recording and/or reproducing apparatus, and tracking error signal detecting method | — | 2003-09-16 |
| 6358764 | Semiconductor light emitting device and method of producing same | — | 2002-03-19 |
| 6314063 | Integrated light emitting and receiving device and optical pick-up with same | — | 2001-11-06 |
| 6025213 | Semiconductor light-emitting device package and method of manufacturing the same | Osamu Matsuda, Toshimasa Kobayashi, Masato Doi | 2000-02-15 |
| 5793790 | Optical device | Masato Doi | 1998-08-11 |
| 5713673 | Recording head, recording device and recording method | Osamu Matsuda, Masato Doi | 1998-02-03 |
| 5379314 | Semiconductor laser and method of manufacturing semiconductor laser | Toyoharu Ohata, Masamichi Ogawa | 1995-01-03 |
| 5373173 | Apparatus for semiconductor laser | Toyoharu Ohata, Masamichi Ogawa, Yoshifumi Mori | 1994-12-13 |
| 5331659 | Optical semiconductor device | Toyoharu Ohata, Masamichi Ogawa | 1994-07-19 |