Black, Jr.; Thomas J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Black, Jr.; Thomas J..The latest application filed is for "ferrofluidic seal centering ring".
- Black, Jr.; Thomas J. - Merrimack NH
- Black, Jr.; Thomas J. - Lowell MA
| Patent | Date |
|---|---|
| Ferrofluidic seal centering ring Grant 5,593,164 - Mraz , et al. January 14, 1 | 1997-01-14 |
| On-site fillable ferrofluidic seal Grant 5,474,302 - Black, Jr. , et al. December 12, 1 | 1995-12-12 |
| Differentially-pumped ferrofluidic seal Grant 5,340,122 - Toboni , et al. August 23, 1 | 1994-08-23 |
| Ferrofluid exclusion seal and method of assembly Grant 4,817,964 - Black, Jr. April 4, 1 | 1989-04-04 |
| Self-activating ferrofluid seal apparatus and method Grant 4,444,398 - Black, Jr. , et al. April 24, 1 | 1984-04-24 |
| Pancake planetary drive Grant 4,282,777 - Ryffel , et al. August 11, 1 | 1981-08-11 |
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