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Keiichi Imaoka
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Shizuoka-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Speaker device and audio signal processing method
Patent number
10,038,963
Issue date
Jul 31, 2018
Yamaha Corporation
Masaki Katayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Speaker device and audio signal processing method
Patent number
9,674,609
Issue date
Jun 6, 2017
Yamaha Corporation
Masaki Katayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Speaker Device and Audio Signal Processing Method
Publication number
20170201846
Publication date
Jul 13, 2017
Yamaha Corporation
Masaki Katayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Speaker Device and Audio Signal Processing Method
Publication number
20150237446
Publication date
Aug 20, 2015
YAMAHA CORPORATION
Masaki Katayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE