Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631211 | Lubricating oil composition for use with sintered porous bearings | Hisaya Nakagawa, Michiaki Takizawa, Teruhiko Ohtaki, Masuhiro Onoyama, Tetsuo Ichimaru | 1997-05-20 |
| 5629274 | Lubricating fluid composition for dynamic pressure bearing | Masamichi Hayakawa, Toshihiro Kobayashi, Kazuya Shimizu, Yuusuke Matsumura, Masuhiro Onoyama | 1997-05-13 |
| 5627147 | Lubricating fluid composition for dynamic pressure bearing | Masamichi Hayakawa, Toshihiro Kobayashi, Kazuya Shimizu, Yuusuke Matsumura, Masuhiro Onoyama | 1997-05-06 |