Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5056640 | Torque transmission device for a four-wheel drive vehicle | Masaji Yamamoto, Shigeo Tanooka, Toshifumi Sakai | 1991-10-15 |
| 5031743 | Driving power transmission | Toshifumi Sakai, Tetsuya Nakano | 1991-07-16 |
| 4905808 | Torque transmission device for a four-wheel drive vehicle | Tamaki Tomita, Hiroaki Asano, Keiichi Nakamura, Masaji Yamamoto, Shigeo Tanooka +2 more | 1990-03-06 |