Kai Huang

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Mountain View, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Abuse-resistant method of providing invitation codes for registerin...
- Patent number 8,768,302
- Issue date Jul 1, 2014
- Google Inc.
- Keith J. Coleman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Abuse-resistant method of registering user accounts with an online...
- Patent number 8,023,927
- Issue date Sep 20, 2011
- Google Inc.
- Keith J. Coleman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Abuse-Resistant Method of Providing Invitation Codes for Registerin...
- Publication number 20120009898
- Publication date Jan 12, 2012
- Keith J. Coleman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE