Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865948 | Optical recording material, process for preparing the same and optical recording method | Tsuyoshi Masumoto, Kenji Suzuki, Akira Matsumoto, Nobuhiro Ota, Shuji Masuda | 1989-09-12 |
| 4806265 | Amorphous ferromagnetic oxides | Kenji Suzuki, Tsuyoshi Masumoto, Nobuhiro Ota, Masao Mitera, Akira Matsumoto +1 more | 1989-02-21 |