Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6108297 | Optical disk with a uniform film thickness by having different angles of inclination for the side surfaces of grooves | Teruyuki Ohta | 2000-08-22 |
| 5999512 | Magnetooptical disk having a thermal diffusion layer to suppress thermal transmission between adjacent information tracks | — | 1999-12-07 |
| 5933181 | Photographic recording apparatus | Yukihiko Shimizu, Kinya Ueda, Yoshijiro Ushio, Takehiko Ueda | 1999-08-03 |