Douglas Richards

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Virgnia Beach, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Hearing device improvements using modulation of acoustically couple...
- Patent number 8,189,839
- Issue date May 29, 2012
- Virginia Commonwealth University
- Martin Lenhardt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Acoustic coupler for skin contact hearing enhancement devices
- Patent number 7,616,771
- Issue date Nov 10, 2009
- Virginia Commonwealth University
- Martin Lenhardt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEARING DEVICE IMPROVEMENTS USING MODULATION TECHNIQUES ADAPTED TO...
- Publication number 20100246867
- Publication date Sep 30, 2010
- Martin Lenhardt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Hearing device improvements using modulation techniques
- Publication number 20060188115
- Publication date Aug 24, 2006
- Martin Lenhardt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE