Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696758 | Optical recording media | Sumio Hirose, Yoshiteru Taniguchi, Hideki Umehara | 1997-12-09 |
| 5658707 | Optical recording media | Keisuke Takuma, Tsutami Misawa, Hideki Umehara, Yoshiteru Taniguchi, Sumio Hirose | 1997-08-19 |
| 5633106 | Optical recording media and a method of recording and reproducing information | Shin Aihara, Hideki Umehara, Yoshiteru Taniguchi, Sumio Hirose | 1997-05-27 |