Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5366252 | Infrared-absorbing mark printed matter | Masato Nishida, Toshio Oshima, Tsunemi Ohiwa | 1994-11-22 |
| 4554606 | Magnetic recording medium | Hiroshi Zaitsu | 1985-11-19 |
| 4480004 | Magnetic recording medium | Fumio Togawa, Hiroshi Zaitsu | 1984-10-30 |