Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824122 | Compact magnetic fluid low pressure seal | Ronald Moskowitz | 1989-04-25 |
| 4797013 | Compact ferrofluidic electrically conducting sealed bearing | Hanumaiah L. Gowda, Ronald Moskowitz | 1989-01-10 |
| 4772032 | Compact magnetic fluid low pressure seal | Ronald Moskowitz | 1988-09-20 |
| 4732706 | Method of preparing low viscosity, electrically conductive ferrofluid composition | Lucian Borduz | 1988-03-22 |
| 4692826 | Bearing assembly with integrated ferrofluid seal | Raoul Casciari | 1987-09-08 |
| 4687596 | Low viscosity, electrically conductive ferrofluid composition and method of making and using same | Lucian Borduz | 1987-08-18 |
| 4673997 | Electrically conductive ferrofluid bearing and seal apparatus and low-viscosity electrically conductive ferrofluid used therein | Hanumaiah L. Gowda, Lucian Borduz | 1987-06-16 |
| 4628384 | Bearing assembly with integrated ferrofluid seal | Raoul Casciari | 1986-12-09 |
| 4604229 | Electrically conductive ferrofluid compositions and method of preparing and using same | Lucian Borduz, Hanumaiah L. Gowda | 1986-08-05 |
| 4604222 | Stable ferrofluid composition and method of making and using same | Lucian Borduz | 1986-08-05 |
| 4575102 | Coaxial, multiple-shaft ferrofluid seal apparatus | Hanumaiah L. Gowda | 1986-03-11 |
| 4531846 | Compact ferrofluid seal and bearing assembly | — | 1985-07-30 |
| 4527805 | High-pressure ferrofluid seal apparatus | Hanumaiah L. Gowda | 1985-07-09 |
| 4526379 | Stabilized ferrofluid-ferrofluid seal apparatus and method | — | 1985-07-02 |
| 4526380 | Single pole piece multiple-stage ferrofluid seal apparatus | Hanumaiah L. Gowda | 1985-07-02 |
| 4526382 | Radially polarized multiple-stage ferrofluid seal apparatus | Hanumaiah L. Gowda | 1985-07-02 |
| 4506895 | Self-activating ferrofluid seal apparatus and method of use | — | 1985-03-26 |
| 4502700 | Ferrofluid linear seal apparatus | Hanumaiah L. Gowda | 1985-03-05 |
| 4478424 | Ferrofluid seal apparatus and method | — | 1984-10-23 |
| 4445696 | Nonbursting magnetic liquid seals for high vacuum applications | Ronald Moskowitz, Raymond Rodier | 1984-05-01 |
| 4407508 | Single-pole-piece ferrofluid seal apparatus and exclusion seal system | Raoul Casciari | 1983-10-04 |
| 4407518 | Nonbursting multiple-stage ferrofluid seal and system | Ronald Moskowitz, James L. Kern | 1983-10-04 |
| 4357022 | Ferrofluid rotary-shaft seal apparatus and method | — | 1982-11-02 |
| 4357021 | Ferrofluid rotary-shaft seal apparatus and method | Alan Schwartzman | 1982-11-02 |
| 4357024 | Ferrofluid rotary-shaft seal apparatus and method | — | 1982-11-02 |