Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877071 | Three layer cushion tire | Motoshi Tanigawa, Hidehiko Dohi, Kouji Ichikawa, Tetsuo Koishi | 1989-10-31 |
| 4840844 | Magnetic recording medium | Masaaki Futamoto, Yukio Honda, Shinichiro Saito, Kazuetsu Yoshida, Toyoji Okuwaki +6 more | 1989-06-20 |