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Christopher Sherwin
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Rockville, MD, US
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last 30 patents
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Patent Grant
Methods and apparatus for dual-tone multi-frequency signal analysis...
Patent number
8,031,708
Issue date
Oct 4, 2011
Genband US LLC
Xiaomin Lu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Methods and apparatus for dual-tone multi-frequency signal conversi...
Patent number
8,018,918
Issue date
Sep 13, 2011
Genband US LLC
Rakendu Devdhar
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Router and method for protocol process migration
Patent number
7,583,590
Issue date
Sep 1, 2009
Telefonaktiebolaget L M Ericsson (Publ)
Kaarthik Sivakumar
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
METHODS AND APPARATUS FOR DUAL-TONE MULTI-FREQUENCY SIGNAL ANALYSIS...
Publication number
20090168769
Publication date
Jul 2, 2009
Xiaomin LU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHODS AND APPARATUS FOR DUAL-TONE MULTI-FREQUENCY SIGNAL CONVERSI...
Publication number
20090003315
Publication date
Jan 1, 2009
Rakendu DEVDHAR
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Router and method for protocol process migration
Publication number
20070014231
Publication date
Jan 18, 2007
Kaarthik Sivakumar
H04 - ELECTRIC COMMUNICATION TECHNIQUE