Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6152453 | Spherical annular seal member and method of manufacturing the same | Shuichi Kubota, Takeshi Furukido | 2000-11-28 |
| 6129362 | Spherical annular seal member and method of manufacturing the same | Shuichi Kubota, Takeshi Furukido | 2000-10-10 |
| 5997979 | Spherical annular seal member and method of manufacturing the same | — | 1999-12-07 |
| 4720349 | Sliding member of graphite-metal borides | Kazuo Kobayashi, Kenji Miyazaki, Tsuyoshi Hagio, Ichitaro Ogawa, Hisayoshi Yoshida +3 more | 1988-01-19 |
| 4637884 | Sliding member of graphite-boron carbides | Kenji Miyazaki, Tsuyoshi Hagio, Ichitaro Ogawa, Hisayoshi Yoshida, Kazuo Kobayashi +3 more | 1987-01-20 |