Masahisa Masuda

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Westlinn, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Single transducer full duplex talking circuit
- Patent number 8,315,379
- Issue date Nov 20, 2012
- Matech, Inc.
- Masahisa Masuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information 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
Information 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
Information Patent Grant
Audio headset
- Patent number 7,072,476
- Issue date Jul 4, 2006
- Matech, Inc.
- Donald R. White
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headset with loopdown band
- Patent number D458244
- Issue date Jun 4, 2002
- Matech, Inc.
- Masahisa Masuda
- D14 - Recording, communication, or information retrieval equipment
Information Patent Grant
Headset with loopback band
- Patent number D458245
- Issue date Jun 4, 2002
- Matech, Inc.
- Masahisa Masuda
- D14 - Recording, communication, or information retrieval equipment

Patents Applicationslast 30 patents

Information Patent Application
Automatic-Switching Wireless Communication Device
- Publication number 20080274764
- Publication date Nov 6, 2008
- Matech, Inc.
- Masahisa Masuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SINGLE TRANSDUCER FULL DUPLEX TALKING CIRCUIT
- Publication number 20080170515
- Publication date Jul 17, 2008
- Matech, Inc.
- Masahisa Masuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information 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
Information Patent Application
Audio headset
- Publication number 20040136543
- Publication date Jul 15, 2004
- Donald R. White
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Loopdown and looparound headsets
- Publication number 20020186858
- Publication date Dec 12, 2002
- Masahisa Masuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE