Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5511440 | Method of manufacturing a hollow steering shaft and hollow steering shaft | Yasushi Watanabe, Koichi Yokoi | 1996-04-30 |
| 5461767 | Manufacturing method of metal bellows | — | 1995-10-31 |
| 5018899 | Yoke for universal joint and manufacturing method therefor | Ritsuo Kuribara, Koichi Yokoi, Kiyoshi Sadakata | 1991-05-28 |