Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4626315 | Process of forming ultrafine pattern | Tatsuji Kitamoto, Akira Nahara, Ryuji Shirahata, Yoshihiro Arai | 1986-12-02 |
| 4254208 | Photographic material | Sumitaka Tatsuta, Masuhiko Hirose | 1981-03-03 |
| 4250225 | Process for the production of a magnetic recording medium | Ryuji Shirahata, Tatsuji Kitamoto, Masaaki Suzuki | 1981-02-10 |