Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4340233 | Ferrofluid seal apparatus | Akira Yamamura | 1982-07-20 |
| 4252328 | Self-activating ferrofluid seal and method | Ronald Moskowitz, Raoul Casciari, Alvan F. Chorney | 1981-02-24 |
| 4252353 | Self-activating ferrofluid seals | Ronald Moskowitz, Raoul Casciari, Alvan F. Chorney | 1981-02-24 |