Allen; Ioan R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Allen; Ioan R..The latest application filed is for "matrix-encoded surround-sound channels in a discrete digital sound format".
- Allen; Ioan R. - San Francisco CA
- Allen; Ioan R. - Tiburon CA
| Patent | Date |
|---|---|
| Matrix-encoded surround-sound channels in a discrete digital sound format Grant 6,624,873 - Callahan, Jr. , et al. September 23, 2 | 2003-09-23 |
| Variable matrix decoder Grant 4,941,177 - Mandell , et al. * July 10, 1 | 1990-07-10 |
| Variable matrix decoder Grant 4,799,260 - Mandell , et al. January 17, 1 | 1989-01-17 |
| Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise Grant 4,577,302 - Allen March 18, 1 | 1986-03-18 |
| Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore Grant 4,577,305 - Allen , et al. March 18, 1 | 1986-03-18 |
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