Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666339 | Optical information reproducing apparatus using transversal filter | — | 1997-09-09 |
| 5615200 | Light beam shaping device to change an anisotropic beam to an isotropic beam for reducing the size of an optical head | Isao Hoshino, Shoko Wachi, Masahiko Tanaka | 1997-03-25 |
| 5602825 | Optical disk and optical disk apparatus | Toshihiro Sugaya | 1997-02-11 |
| 5592464 | Optical disk and optical disk apparatus | Toshihiro Sugaya | 1997-01-07 |