Leonard; Eugene
Patent Applications and Registrations
Patent applications and USPTO patent grants for Leonard; Eugene.The latest application filed is for "anti-copying video signal processing".
- Leonard; Eugene - Sands Point NY
- Leonard; Eugene - Port Washington NY
| Patent | Date |
|---|---|
| Anti-copying video signal processing Grant 5,034,981 - Leonard , et al. July 23, 1 | 1991-07-23 |
| Encoding an optical video disc to inhibit video tape recording Grant 5,003,590 - Lechner , et al. * March 26, 1 | 1991-03-26 |
| Modifying a television signal to inhibit recording/reproduction Grant 4,914,694 - Leonard , et al. April 3, 1 | 1990-04-03 |
| Reliable secure, updatable "cash" card system Grant 4,752,676 - Leonard , et al. June 21, 1 | 1988-06-21 |
| Subscriber television system Grant 4,439,785 - Leonard March 27, 1 | 1984-03-27 |
| Magnetic Recording Utilizing A Selective Magnetic Shielding Structure Grant 3,613,101 - Leonard , et al. October 12, 1 | 1971-10-12 |
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