Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374363 | Viscous coupling fluids | Masahiko Fukuda, Teiji Masuda, Kenichi Sekine, Manabu Tohyama, Norio Yano | 1994-12-20 |
| 5133438 | Viscous coupling with spacer rings | — | 1992-07-28 |
| 4838119 | Differential gear assembly with viscous and friction clutch mechanisms | Masao Teraoka, Osamu Ishikawa | 1989-06-13 |
| 4782720 | Power transmission unit | Masao Teraoka, Sakuo Kurihara | 1988-11-08 |
| 4690258 | Hydraulic power transmission device with centrifugally actuated clutch override | Masao Teraoka | 1987-09-01 |