Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7691789 | Self-cleaning well control fluid | Diankui Fu, Mathew M. Samuel | 2010-04-06 |
| 7639806 | Fingerprinting digital devices using electromagnetic characteristics of their communications | Thomas E. Daniels, Jr., Mani Mina | 2009-12-29 |
| 6865215 | Spread spectrum digital data communication overlay system and method | Michael L. Hageman | 2005-03-08 |
| 6377116 | Pre-distorter and corresponding method for deriving same | S. Anders Mattsson | 2002-04-23 |
| RE35574 | Communication device apparatus and method utilizing pseudonoise signal for acoustical echo cancellation | John Doherty | 1997-07-29 |
| 5461921 | Direct-sequence spread-spectrum ultrasonic testing device | Emmanuel P. Papadakis, Samuel J. Wormley | 1995-10-31 |
| 5327496 | Communication device, apparatus, and method utilizing pseudonoise signal for acoustical echo cancellation | John Doherty | 1994-07-05 |