Andreas H. Weirich

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Reducing back reflection in hybrid lasers
- Patent number 10,873,173
- Issue date Dec 22, 2020
- Elenion Technologies, LLC
- Hang Guan
- G02 - OPTICS
Information Patent Grant
ADPCM encoder/decoder with improved tracking
- Patent number 4,592,070
- Issue date May 27, 1986
- Northern Telecom Limited
- Peter E. Chow
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
ADPCM Encoder/decoder with signalling bit insertion
- Patent number 4,549,304
- Issue date Oct 22, 1985
- Northern Telecom Limited
- Andreas H. Weirich
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ADPCM Encoder/decoder with zero code suppression
- Patent number 4,542,516
- Issue date Sep 17, 1985
- Northern Telecom Limited
- Andreas H. Weirich
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
REDUCING BACK REFLECTION IN HYBRID LASERS
- Publication number 20200395728
- Publication date Dec 17, 2020
- Elenion Technologies, LLC
- Hang Guan
- G02 - OPTICS