Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5623466 | Optical pickup apparatus with skew error control and optical information recording and/or reproducing apparatus using the same | — | 1997-04-22 |
| 5204852 | Optical disc-like recoding medium and manufacturing method thereof | Eiji Nakagawa, Toshinori Kawanishi | 1993-04-20 |
| 5006703 | Reflective optical rotary encoder disc | Juichi Shikunami, Kanji Kayanuma, Masakatsu Kai, Nobuaki Nakamura | 1991-04-09 |
| 4929822 | Detection system with an optical encoder to optically detect displacement amount of a movable device | Nobuaki Nakamura, Yukimi Hirose, Masakatsu Kai | 1990-05-29 |
| 4716560 | Recording disc and method for fabricating same | — | 1987-12-29 |
| 4695162 | Film thickness measuring apparatus | Kanji Kayanuma | 1987-09-22 |
| 4653924 | Rotating analyzer type ellipsometer | Kanji Kayanuma | 1987-03-31 |