Ferrofluidics Corp
FerrofluidActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4527805A | High-pressure ferrofluid seal apparatus | Expired / Lapsed | 1984-05-03 | 1985-07-09 | 12 | Details |
| US4478424A | Ferrofluid seal apparatus and method | Expired / Lapsed | 1984-01-27 | 1984-10-23 | 23 | Details |
| US4407518A | Nonbursting multiple-stage ferrofluid seal and system | Expired / Lapsed | 1983-01-05 | 1983-10-04 | 17 | Details |
| US4357023A | Ferrofluid rotary-shaft seal apparatus and method | Expired / Lapsed | 1980-11-19 | 1982-11-02 | 19 | Details |
| US4171818A | Dynamic lip seal using ferrofluids as sealant/lubricant | Expired / Lapsed | 1977-04-04 | 1979-10-23 | 11 | Details |
| US4123675A | Inertia damper using ferrofluid | Expired / Lapsed | 1977-06-13 | 1978-10-31 | 17 | Details |