Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880692 | Magnetic recording medium | Katsumi Ryoke, Masatoshi Takahashi, Tsutomu Okita, Kazuko Hanai | 1989-11-14 |
| 4880693 | Magnetic recording medium | Katsumi Ryoke, Masatoshi Takahashi, Tsutomu Okita, Takashi Yoneyama | 1989-11-14 |
| 4848795 | Automotive seat belt device | Masakazu Muraishi, Kenro Otsuka | 1989-07-18 |
| 4822668 | Elastic absorbent | Toyoaki Tanaka, Katuzi Ohira, Akira Nakamura, Ryosuke Kamei | 1989-04-18 |