Douglas Lin

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for managing ENUM records
- Patent number 8,831,201
- Issue date Sep 9, 2014
- AT&T Intellectual Property I, L.P.
- Bernard Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for providing privacy for a telephone number i...
- Patent number 8,767,589
- Issue date Jul 1, 2014
- AT&T Intellectual Property I, L.P.
- Bernard Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method of delivering ringback audio content
- Patent number 8,654,962
- Issue date Feb 18, 2014
- AT&T Intellectual Property I, L.P.
- Bernard Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method of delivering ringback audio content
- Patent number 8,401,169
- Issue date Mar 19, 2013
- AT&T Intellectual Property I, L.P.
- Bernard Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
System and Method of Delivering Ringback Audio Content
- Publication number 20130230161
- Publication date Sep 5, 2013
- AT&T INTELLECTUAL PROPERTY I, L.P.
- Bernard Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR PROVIDING PRIVACY FOR A TELEPHONE NUMBER I...
- Publication number 20100098234
- Publication date Apr 22, 2010
- BERNARD KU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and Method of Delivering Ringback Audio Content
- Publication number 20090161853
- Publication date Jun 25, 2009
- AT&T KNOWLEDGE VENTURES, L.P.
- Bernard Ku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS FOR MANAGING ENUM RECORDS
- Publication number 20080037757
- Publication date Feb 14, 2008
- SBC Knowledge Ventures, L.P.
- BERNARD KU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE