Hiroyasu Kumo

Follow

Person

Neyagawa-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Speaker diaphragm and electrodynamic loudspeaker using the same
- Patent number 8,131,001
- Issue date Mar 6, 2012
- Onkyo Corporation
- Kenichiro Toyofuku
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice coil assembly and loudspeaker using the same
- Patent number 7,864,977
- Issue date Jan 4, 2011
- ONKYO Corporation
- Koichi Sadaie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voice coil assembly, loudspeaker using the same, and method for pro...
- Patent number 7,848,536
- Issue date Dec 7, 2010
- ONKYO Corporation
- Koichi Sadaie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Speaker diaphragm and speaker structure
- Patent number 7,344,001
- Issue date Mar 18, 2008
- Onkyo Corporation
- Toshihide Inoue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Speaker member and manufacturing method thereof
- Patent number 6,378,649
- Issue date Apr 30, 2002
- Onkyo Corporation
- Toshihide Inoue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
VOICE COIL ASSEMBLY AND LOUDSPEAKER USING THE SAME
- Publication number 20100215208
- Publication date Aug 26, 2010
- Koichi SADAIE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VOICE COIL ASSEMBLY, LOUDSPEAKER USING THE SAME, AND METHOD FOR PRO...
- Publication number 20090116681
- Publication date May 7, 2009
- Koichi SADAIE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SPEAKER DIAPHRAGM AND ELECTRODYNAMIC LOUDSPEAKER USING THE SAME
- Publication number 20090041291
- Publication date Feb 12, 2009
- Kenichiro TOYOFUKU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Speaker diaphragm and speaker structure
- Publication number 20060266577
- Publication date Nov 30, 2006
- ONKYO CORPORATION
- Toshihide Inoue
- H04 - ELECTRIC COMMUNICATION TECHNIQUE