Masaaki Tanaka

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Kanagawa-Ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Headphone set and method of producing the same
- Patent number 8,175,315
- Issue date May 8, 2012
- Victor Company of Japan, Ltd.
- Masaaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphone with cord winder devices
- Patent number 7,372,974
- Issue date May 13, 2008
- Victor Company of Japan, Limited
- Yuuji Yanagishita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEADPHONE
- Publication number 20120076340
- Publication date Mar 29, 2012
- VICTOR COMPANY OF JAPAN LIMITED
- Takayuki UCHIDA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Headphone set and method of producing the same
- Publication number 20090041284
- Publication date Feb 12, 2009
- Victor Company of Japan, Ltd.
- Masaaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Headphone with cord winder devices
- Publication number 20050058316
- Publication date Mar 17, 2005
- Yuuji Yanagishita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE