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Yuki HATANAKA
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Osaka, JP
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Patents Grants
last 30 patents
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Patent Grant
Speaker unit and portable information terminal
Patent number
8,682,021
Issue date
Mar 25, 2014
SANYO Electric Co., Ltd.
Kazuyuki Kosuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electroacoustic transducer
Patent number
8,155,373
Issue date
Apr 10, 2012
SANYO Electric Co., Ltd.
Kazuyuki Kosuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Diaphragm and loudspeaker unit using the same
Patent number
8,135,165
Issue date
Mar 13, 2012
Sanyo Electric Co., Ltd.
Yuki Hatanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SPEAKER UNIT AND PORTABLE INFORMATION TERMINAL
Publication number
20110317867
Publication date
Dec 29, 2011
SANYO ELECTRIC CO., LTD.
Kazuyuki KOSUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SPEAKER UNIT AND PORTABLE INFORMATION TERMINAL
Publication number
20110311092
Publication date
Dec 22, 2011
SANYO ELECTRIC CO., LTD.
Kazuyuki KOSUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SPEAKER UNIT, MANUFACTURING METHOD THEREOF, AND PORTABLE INFORMATIO...
Publication number
20110261990
Publication date
Oct 27, 2011
SANYO ELECTRIC CO., LTD.
Kazuyuki Kosuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIAPHRAGM AND LOUDSPEAKER UNIT USING THE SAME
Publication number
20090052726
Publication date
Feb 26, 2009
SANYO ELECTRIC CO., LTD.
Yuki Hatanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ELECTROACOUSTIC TRANSDUCER
Publication number
20080101649
Publication date
May 1, 2008
Sanyo Electric Co., Ltd.
Kazuyuki KOSUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ELECTROACOUSTIC TRANSDUCER
Publication number
20080101648
Publication date
May 1, 2008
SANYO ELECTRIC CO., LTD.
Yuki HATANAKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE