Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37719 | Optical data recording system and method of production of recording medium | Toshinori Sugiyama, Mitsuru Shimizu, Yoshitane Tuburaya | 2002-05-28 |
| 4876133 | Optical data recording system and method of production of recording medium | Toshinori Sugiyama, Mitsuru Shimizu, Yoshitane Tuburaya | 1989-10-24 |
| 4733388 | Information recording disc | Nobuyuki Fujimoto, Shinichi Abe, Yoshito Tsunoda, Kazuo Shigematsu, Yasunori Kanazawa +1 more | 1988-03-22 |