Weirich; Andreas H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Weirich; Andreas H..The latest application filed is for "adpcm encoder/decoder with improved tracking".
- Weirich; Andreas H. - Ottawa CA
| Patent | Date |
|---|---|
| ADPCM encoder/decoder with improved tracking Grant 4,592,070 - Chow , et al. May 27, 1 | 1986-05-27 |
| ADPCM Encoder/decoder with signalling bit insertion Grant 4,549,304 - Weirich , et al. October 22, 1 | 1985-10-22 |
| ADPCM Encoder/decoder with zero code suppression Grant 4,542,516 - Weirich September 17, 1 | 1985-09-17 |
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