Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624873 | Matrix-encoded surround-sound channels in a discrete digital sound format | Raymond Callahan | 2003-09-23 |
| 6011610 | Compatible digital soundtracks for 70 mm motion picture film | — | 2000-01-04 |
| 4941177 | Variable matrix decoder | Douglas E. Mandell, Craig C. Todd, Mark F. Davis | 1990-07-10 |
| 4815068 | Audio encoder for use with more than one decoder each having different characteristics | Ray M. Dolby, Randolph G. Pauker | 1989-03-21 |
| 4799260 | Variable matrix decoder | Douglas E. Mandell, Craig C. Todd, Mark F. Davis | 1989-01-17 |
| 4577302 | Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise | — | 1986-03-18 |
| 4577305 | Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore | Craig C. Todd | 1986-03-18 |