Shu-Ren Chen

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Santa Cruz, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Headset amplifier with automatic log on/log off detection
- Patent number 5,926,543
- Issue date Jul 20, 1999
- GN Netcom, Inc.
- Dwight D. Lynn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone headset amplifier with battery saver, receive line noise...
- Patent number RE35536
- Issue date Jun 17, 1997
- ACS Wireless, Inc.
- Pierre R. Irissou
- 379 - Telephonic communications
Information Patent Grant
Apparatus for and method of operating an automatic log on/log off c...
- Patent number 5,488,657
- Issue date Jan 30, 1996
- ACS Communications, Inc.
- Dwight D. Lynn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone headset amplifier with battery saver, receive line noise...
- Patent number 5,353,347
- Issue date Oct 4, 1994
- ACS Communications, Inc.
- Pierre R. Irissou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headset amplifier with automatic log on/log off detection
- Patent number 5,226,077
- Issue date Jul 6, 1993
- ACS Communications, Inc.
- Dwight D. Lynn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hinged acoustical voice tube
- Patent number 4,926,961
- Issue date May 22, 1990
- ACS Communications
- Phillip Gattey
- G10 - MUSICAL INSTRUMENTS ACOUSTICS