Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6119347 | Method for manufacturing balls for bearing and products thereby | Kiyoshi Hirakawa, Akira Suzuki, Jiami Pu, Katsunori Yanase, Minoru Kohari +1 more | 2000-09-19 |
| 6068408 | Cage for a rolling bearing | Yasushi Mutoh, Setsu Kawaguchi, Kenji Okuma, Magozou Hamamoto, Hideki Koizumi +4 more | 2000-05-30 |
| 5603576 | Method for manufacturing balls for bearing and products thereby | Kiyoshi Hirakawa, Akira Suzuki, Jiami Pu, Katsunori Yanase, Minoru Kohari +1 more | 1997-02-18 |