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Patent applications and USPTO patent grants for Tchang; Chen.The latest application filed is for "delegate unit and conference system with the delegate unit".
Patent | Date |
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Delegate unit and conference system with the delegate unit Grant 9,681,221 - Tchang , et al. June 13, 2 | 2017-06-13 |
Delay unit for a conference audio system, method for delaying audio input signals, computer program and conference audio system Grant 9,271,096 - Smaak , et al. February 23, 2 | 2016-02-23 |
Delegate Unit And Conference System With The Delegate Unit App 20160044407 - Tchang; Chen ;   et al. | 2016-02-11 |
Conference audio system, process for distributing audio signals and computer program Grant 8,428,236 - Smaak , et al. April 23, 2 | 2013-04-23 |
Delay Unit For A Conference Audio System, Method For Delaying Audio Input Signals, Computer Program And Conference Audio System App 20120170768 - Smaak; Marc ;   et al. | 2012-07-05 |
Conference Audio System, Process For Distributing Auto Signals And Computer Program App 20100215165 - Smaak; Marc ;   et al. | 2010-08-26 |
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