Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |