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Yongqian Zheng
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Encino, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Methods and systems for aggregating presence information to provide...
Patent number
9,363,298
Issue date
Jun 7, 2016
BlackBerry Limited
Michael Colbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Methods and systems for aggregating presence information to provide...
Patent number
8,417,786
Issue date
Apr 9, 2013
Research In Motion Limited
Michael Colbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
METHODS AND SYSTEMS FOR AGGREGATING PRESENCE INFORMATION TO PROVIDE...
Publication number
20130185443
Publication date
Jul 18, 2013
Research in Motion Limited
Michael Colbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method And System For Inputting DTMF Tones From A Smart Phone Keyboard
Publication number
20120071202
Publication date
Mar 22, 2012
Research in Motion Limited
Yongqian Zheng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Methods and Systems for Aggregating Presence Information to Provide...
Publication number
20100075673
Publication date
Mar 25, 2010
Michael Colbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE