Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4983421 | Method for producing magnetic recording media | Kouichi Mochizuki, Tadashi Yasunaga | 1991-01-08 |
| 4874636 | Method for preparing magnetic recording medium | Tsutomu Okita, Hiroshi Ogawa | 1989-10-17 |
| 4324177 | Calender roll for supercalender | Nobuo Tsuji, Masaaki Fujiyama, Eiichi Tadokoro, Keiji Tanaka, Isao Yamamoto | 1982-04-13 |
| 4320159 | Magnetic recording medium | Hiroshi Ogawa, Yasuo Tamai | 1982-03-16 |