Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7558184 | Optical pickup device | Seiji Kajiyama, Tetsuhisa Hosokawa | 2009-07-07 |
| 7525897 | Optical pickup device | Seiji Kajiyama | 2009-04-28 |
| 7486712 | Semiconductor laser apparatus, method of manufacturing semiconductor laser apparatus, and optical pickup apparatus | Masayuki Hata, Yasuyuki Bessho, Yasuhiko Nomura, Masayuki Shono, Yoichi Tsuchiya | 2009-02-03 |
| 7420894 | Optical pickup device | Seiji Kajiyama | 2008-09-02 |
| 7209415 | Optical pickup device and recording and/or reproducing device | Seiji Kajiyama, Yoichi Tsuchiya | 2007-04-24 |