Ifay F. Chang

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Katonah, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for establishing a voice communication solution f...
- Patent number 7,643,435
- Issue date Jan 5, 2010
- Ifay F. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Methods for enabling e-commerce voice communication
- Patent number 7,325,029
- Issue date Jan 29, 2008
- Ifay F. Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for establishing a voice communication service fo...
- Patent number 7,065,070
- Issue date Jun 20, 2006
- Ifay F. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Touch-screen input device using the monitor as a light source opera...
- Patent number 5,764,223
- Issue date Jun 9, 1998
- International Business Machines Corporation
- Ifay F. Chang
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
METHODS FOR ENABLING E-COMMERCE VOICE COMMUNICATION
- Publication number 20110103368
- Publication date May 5, 2011
- IPO2U.com, Inc.
- Ifay F. Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHODS FOR ENABLING E-COMMERCE VOICE COMMUNICATION
- Publication number 20100183131
- Publication date Jul 22, 2010
- IPO2U.com, Inc.
- Ifay F. Chang
- G06 - COMPUTING CALCULATING COUNTING