Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6704254 | Optical disk device, control method of optical system, medium, and information aggregate | Seiji Nishiwaki, Junji Nagaoka | 2004-03-09 |
| 6674709 | Optical head apparatus | Junichi Asada, Seiji Nishiwaki, Yuichi Takahashi, Kenji Nagashima, Hiroaki Matsumiya +1 more | 2004-01-06 |
| 6618343 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Seiji Nishiwaki, Kenji Nagashima +1 more | 2003-09-09 |
| 5946137 | Optical information processing unit | Tetsuo Saimi | 1999-08-31 |
| 5315574 | Optical head with polarized beam hologram | Tetsuo Saimi, Makoto Kato | 1994-05-24 |
| 5260929 | Optical disk drive including dust-proofing annular projections | Goro Naoki, Shoji Goto, Ichiro Kawamura, Hiroshi Yamamoto | 1993-11-09 |
| 5175717 | Optical head having a fixed optical casing and a movable optical casing | Tetsuo Saimi, Shoji Gotoh | 1992-12-29 |
| 5151889 | Optical head device using cross-polarized from a light source for use in optical disk system | Tetsuo Saimi | 1992-09-29 |
| 5091793 | Optical head | Shoji Goto, Akihiro Sakata, Hiroshi Yamamoto, Tetsuo Saimi | 1992-02-25 |