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Yasuhiro Kume
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Two-way communications device having a single transducer
Patent number
7,881,483
Issue date
Feb 1, 2011
Matech, Inc.
Masahisa Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Automatic-switching wireless communication device
Patent number
7,826,805
Issue date
Nov 2, 2010
Matech, Inc.
Masahisa Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
Automatic-Switching Wireless Communication Device
Publication number
20080274764
Publication date
Nov 6, 2008
Matech, Inc.
Masahisa Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Application
TWO-WAY COMMUNICATIONS DEVICE HAVING A SINGLE TRANSDUCER
Publication number
20070133442
Publication date
Jun 14, 2007
Matech, Inc.
Masahisa Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE