loadpatents
Patent applications and USPTO patent grants for Chen; Herbert M. K..The latest application filed is for "multi-adaptation for a voice packet based".
Patent | Date |
---|---|
Multi-adaptation for a voice packet based Grant 6,580,696 - Chen , et al. June 17, 2 | 2003-06-17 |
Adaptive echo cancellation used with echo suppression to reduce short and long duration echoes Grant 5,852,661 - Chen December 22, 1 | 1998-12-22 |
Ring-signal generation in a SLIC Grant 5,764,755 - Chen June 9, 1 | 1998-06-09 |
Analog-to-digital converter with multi-level dither current input Grant 5,416,481 - Chen May 16, 1 | 1995-05-16 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.