Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696758 | Optical recording media | Masatoshi Yanagimachi, Sumio Hirose, Hideki Umehara | 1997-12-09 |
| 5658707 | Optical recording media | Keisuke Takuma, Tsutami Misawa, Masatoshi Yanagimachi, Hideki Umehara, Sumio Hirose | 1997-08-19 |
| 5633106 | Optical recording media and a method of recording and reproducing information | Shin Aihara, Hideki Umehara, Masatoshi Yanagimachi, Sumio Hirose | 1997-05-27 |
| 5603763 | Method for growing single crystal | Toshiaki Asahi | 1997-02-18 |