Johan Hellgren

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Smorum, DK

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Patents Grantslast 30 patents

Information Patent Grant
Audio system with feedback detection means
- Patent number 7,925,031
- Issue date Apr 12, 2011
- Oticon A/S
- Thomas Bo Elmedyb
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hearing aid with anti feedback system
- Patent number 7,688,990
- Issue date Mar 30, 2010
- Oticon A/S
- Johan Hellgren
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Hearing Aid With Anti Feedback System
- Publication number 20070206824
- Publication date Sep 6, 2007
- Johan Hellgren
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Audio system with feedback detection means
- Publication number 20060266202
- Publication date Nov 30, 2006
- OTICON A/S
- Thomas Bo Elmedyb
- H04 - ELECTRIC COMMUNICATION TECHNIQUE