Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5271631 | Magnetic fluid seal apparatus | Shigeki Matsunaga | 1993-12-21 |
| 5215313 | Magnetic fluid sealing device | Shigeki Matsunaga | 1993-06-01 |
| 5143637 | Magnetic fluid composition | Toshikazu Yabe | 1992-09-01 |
| 5135672 | Electroconductive magnetic fluid composition and process for producing the same | Toshikazu Yabe | 1992-08-04 |
| 5124060 | Magnetic fluid composition | Toshikazu Yabe | 1992-06-23 |
| 5085789 | Ferrofluid compositions | Toshikazu Yabe | 1992-02-04 |
| 5082581 | Aqueous magnetic fluid composition and process for producing thereof | Toshikazu Yabe | 1992-01-21 |
| 4867910 | Electrically conductive ferrofluid composition | Kenjiro Meguro | 1989-09-19 |