Oliver Gelhard

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Hannover, DE

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Patents Grantslast 30 patents

Information Patent Grant
Headset and earphone
- Patent number 9,113,245
- Issue date Aug 18, 2015
- Sennheiser electronic GmbH & Co. KG
- Oliver Gelhard
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Entertainment system and earphone
- Patent number 8,705,761
- Issue date Apr 22, 2014
- Sennheiser electronic GmbH & Co. KG
- Oliver Gelhard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEADSET AND EARPHONE
- Publication number 20130082691
- Publication date Apr 4, 2013
- Oliver GELHARD
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
REPORTER-HEADSET, STUDIO-HEADSET, OR BROADCAST-HEADSET
- Publication number 20100254542
- Publication date Oct 7, 2010
- SENNHEISER ELECTRONIC GMBH & CO. KG
- David Schunack
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
EARPHONE AND HEADSET
- Publication number 20100172532
- Publication date Jul 8, 2010
- SENNHEISER ELECTRONIC GMBH & CO. KG
- Oliver Gelhard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ENTERTAINMENT SYSTEM AND EARPHONE
- Publication number 20100061563
- Publication date Mar 11, 2010
- SENNHEISER ELECTRONIC GMBH & CO. KG
- Oliver Gelhard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of reproducing audio sound with ultrasonic loudspeakers
- Publication number 20050207590
- Publication date Sep 22, 2005
- Wolfgang Niehoff
- H04 - ELECTRIC COMMUNICATION TECHNIQUE