Chanchai Poonpol

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and circuit for echo-cancellation in two-way communications
- Patent number 6,731,752
- Issue date May 4, 2004
- Viadux, Inc.
- Naom Chaplik
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable communications and data terminal having multiple modes of...
- Patent number 6,434,395
- Issue date Aug 13, 2002
- Pacific Communications Sciences, Inc.
- Michael L. Lubin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for transmitting and receiving digital data ov...
- Patent number 6,175,599
- Issue date Jan 16, 2001
- Schlumberger Technology Corporation
- David Lewis Lyon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for transmitting and receiving digital data ov...
- Patent number 5,838,727
- Issue date Nov 17, 1998
- Schlumberger Technology Corporation
- David Lewis Lyon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for reducing multipath distortion
- Patent number 5,257,265
- Issue date Oct 26, 1993
- Pacific Communications
- Chun-Meng Su
- H04 - ELECTRIC COMMUNICATION TECHNIQUE