Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474873 | Optical recording material and method for producing same | Masato Yamamura | 1995-12-12 |
| 5364735 | Multiple layer optical record medium with protective layers and method for producing same | Masato Yamamura | 1994-11-15 |
| 4807220 | Optically recordable carrier | Seiichi Miyai | 1989-02-21 |
| 4633273 | Information recording medium including antimony-selenium compounds | Kenjiro Watanabe, Susumu Sakamoto | 1986-12-30 |
| 4525412 | Information recording medium | Yasuaki Nakane, Susumu Sakamoto, Tadashi Kiyomiya | 1985-06-25 |