Keitaro FUJIWARA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Headphone device
- Patent number 8,983,110
- Issue date Mar 17, 2015
- Sony Corporation
- Keitaro Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphone device
- Patent number 8,767,997
- Issue date Jul 1, 2014
- Sony Corporation
- Keitaro Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphone
- Patent number 8,213,665
- Issue date Jul 3, 2012
- Sony Corporation
- Keitaro Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphones and headphones placement device
- Patent number 7,853,035
- Issue date Dec 14, 2010
- Sony Corporation
- Naotaka Tsunoda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEADPHONE DEVICE
- Publication number 20140198943
- Publication date Jul 17, 2014
- SONY CORPORATION
- Keitaro FUJIWARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LONG BODY UNIT WITH SLIDER
- Publication number 20120043111
- Publication date Feb 23, 2012
- SONY CORPORATION
- Shunsuke Shiomi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HEADPHONE DEVICE
- Publication number 20090052719
- Publication date Feb 26, 2009
- Keitaro Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Headphone
- Publication number 20080056525
- Publication date Mar 6, 2008
- Keitaro FUJIWARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Headphones and headphones placement device
- Publication number 20070053539
- Publication date Mar 8, 2007
- Sony Corporation
- Naotaka Tsunoda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Headphone apparatus
- Publication number 20060104471
- Publication date May 18, 2006
- SONY CORPORATION
- Naotaka Tsunoda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE