Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238254 | Ferrofluid seal apparatus | Tetsuo Oda, Shinji Abe, Kazuya Suzuki, Hirotsugu Kusano | 1993-08-24 |
| 5152539 | Ferrofluid seal apparatus | Tetsuo Oda, Shinji Abe, Kazuya Suzuki, Hirotsugu Kusano | 1992-10-06 |
| 5139396 | Ball bearing for use in vacuum and turbo-molecular pump incorporating same | Kazuya Suzuki | 1992-08-18 |