Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4958712 | Wet clutch device | Tatsumi Suganuma, Tatsuhiko Fukuoka, Naoto Noguchi, Akira Takenaka | 1990-09-25 |
| 4522513 | Tapered-land thrust bearing device | Tatsuhiko Fukuoka | 1985-06-11 |
| 4437215 | Thrust bearing with tapered lands | Tatsuhiko Fukuoka, Hideaki Sugiura | 1984-03-20 |
| 4326758 | Thrust bearing with tapered lands | Tatsuhiko Fukuoka, Hideaki Sugiura | 1982-04-27 |