Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336966 | 4-layer structure reflection type photocathode and photomultiplier using the same | Kiyoshi Nakatsugawa, Kazuyoshi Oguri, Hiroyuki Watanabe | 1994-08-09 |
| 5319626 | Method for rewriting defect management areas on optical disk according to ECMA standard | Minoru Ozaki, Kyosuke Yoshimoto, Koji Yamana, Takuya Nagata, Hidehiko Murata +1 more | 1994-06-07 |
| 5311107 | Method and apparatus for stopping DC motor by brake power corresponding to rotation frequency of motor and disk storage unit having such apparatus | Hiroo Shimegi, Akira Mashimo, Katsuya Enami, Hiroshi Takahashi | 1994-05-10 |