Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5889739 | Magnetooptical recording medium and information recording and reproducing methods using the recording medium | Naoki Nishimura, Hiroshi Omata | 1999-03-30 |
| 5616428 | Magnetooptical recording medium and information recording and reproducing methods using the recording medium | Naoki Nishimura, Hiroshi Omata | 1997-04-01 |
| 5102709 | Optical recording medium and process for production thereof | Shinichi Tachibana | 1992-04-07 |
| 4777068 | Optical recording medium | Hiroshi Omata, Shigeharu Iijima, Eizo Sasamori, Katsuhiko Takano, Masaaki Matsushima +5 more | 1988-10-11 |
| 4711821 | Opto-magnetic recording medium | Kazuhiko Kikuchi, Mitsuharu Sawamura | 1987-12-08 |
| 4695510 | Opto-magnetic recording medium | Mitsuharu Sawamura, Kazuhiko Kikuchi | 1987-09-22 |
| 4658388 | Optical recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitride | Takahiko Ishiwatari, Hiroyoshi Kishi, Hisaaki Kawade, Masaaki Matsushima, Mitsuharu Sawamura | 1987-04-14 |
| 4579777 | Opto-magnetic recording medium | Mitsuharu Sawamura, Kazuhiko Kikuchi | 1986-04-01 |