Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5511440 | Method of manufacturing a hollow steering shaft and hollow steering shaft | Yasushi Watanabe, Kiyoshi Okubo | 1996-04-30 |
| 5114329 | Mold unit for injection molding | Susumu Nakamura | 1992-05-19 |
| 5018899 | Yoke for universal joint and manufacturing method therefor | Ritsuo Kuribara, Kiyoshi Okubo, Kiyoshi Sadakata | 1991-05-28 |
| 4917595 | Nozzle touch sprue bushing device | Susumu Nakamura, Hajime Nakamura | 1990-04-17 |
| 4902212 | Self-lubricating metallic matrix for injection molding | Susumu Nakamura | 1990-02-20 |
| 4889480 | Slide core mold and injection molding | Susumu Nakamura | 1989-12-26 |