Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10536756 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, John O. Ryan | 2020-01-14 |
| 10129605 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, John O. Ryan | 2018-11-13 |
| 9549226 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, John O. Ryan | 2017-01-17 |
| 9060182 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, John O. Ryan | 2015-06-16 |
| 8254756 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, John O. Ryan | 2012-08-28 |
| 8250597 | Method and apparatus for providing copy protection using a transmittal mode command | Derek T. Nelson | 2012-08-21 |
| 7620178 | Copy protection for video signal added pulses | Alistair Knox, Jeremy Corcoran, John O. Ryan, Ronald Quan | 2009-11-17 |
| 7395545 | Method and apparatus for providing copy protection using a transmittal mode command | Derek T. Nelson | 2008-07-01 |
| 7298962 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, John O. Ryan | 2007-11-20 |
| 6381747 | Method for controlling copy protection in digital video networks | Derek T. Nelson | 2002-04-30 |
| 5608799 | Method and apparatus for scrambling and descrambling of video signal with edge fill | John O. Ryan, Ronald Quan, James R. Holzgrafe | 1997-03-04 |
| 5583936 | Video copy protection process enhancement to introduce horizontal and vertical picture distortions | Alistair Knox, Jeremy Corcoran, John O. Ryan, Ronald Quan | 1996-12-10 |
| 5579390 | Method and apparatus for vertically scrambling and descrambling of video signals | John O. Ryan, Ronald Quan, James R. Holzgrafe | 1996-11-26 |
| 5504815 | Method and apparatus for scrambling and descrambling | John O. Ryan, Ronald Quan, James R. Holzgrafe | 1996-04-02 |
| 5438620 | Method and apparatus for scrambling and descrambling of video signal with edge fill | John O. Ryan, Ronald Quan, James R. Holzgrafe | 1995-08-01 |
| 4398815 | Camera mount | Verl N. Barzee | 1983-08-16 |