Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7330418 | Optical disk with plural signal mark positions in a direction substantially perpendicular to tracks | Seiji Nishiwaki, Kazuo Momoo | 2008-02-12 |
| 7196991 | Optical disk apparatus, method for calculation of amount of lens shift, program and medium | Seiji Nishiwaki, Kazuo Momoo | 2007-03-27 |
| 6930972 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Seiji Nishiwaki, Kenji Nagashima +1 more | 2005-08-16 |
| 6920101 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Seiji Nishiwaki, Kenji Nagashima +1 more | 2005-07-19 |
| 6909685 | Optical disk device having light converging means which marks plural signal mark positions in a direction substantially perpendicular to tracks | Seiji Nishiwaki, Kazuo Momoo | 2005-06-21 |
| 6888787 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Seiji Nishiwaki, Kenji Nagashima +1 more | 2005-05-03 |
| 6819647 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Seiji Nishiwaki, Kenji Nagashima +1 more | 2004-11-16 |
| 6704254 | Optical disk device, control method of optical system, medium, and information aggregate | Seiji Nishiwaki, Kazuo Momoo | 2004-03-09 |
| 6618343 | Optical information processor and optical element | Youichi Saitoh, Junichi Asada, Yuichi Takahashi, Seiji Nishiwaki, Kenji Nagashima +1 more | 2003-09-09 |