Tatsuzo Hasegawa

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Kawagoe-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electric power supply unit and electric power supply controlling me...
- Patent number 7,239,046
- Issue date Jul 3, 2007
- Pioneer Corporation
- Kazuyuki Kudo
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
BTL amplifier apparatus
- Patent number 7,092,533
- Issue date Aug 15, 2006
- Pioneer Corporation
- Tatsuzo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
BTL amplifying system
- Patent number 6,806,766
- Issue date Oct 19, 2004
- Pioneer Corporation
- Tatsuzo Hasegawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pulse-width modulating amplifier circuit
- Patent number 4,992,749
- Issue date Feb 12, 1991
- Pioneer Electronic Corporation
- Akio Tokumo
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pulse width modulation amplifier circuit
- Patent number 4,968,948
- Issue date Nov 6, 1990
- Pioneer Electronic Corporation
- Akio Tokumo
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pulse width modulation amplifier circuit
- Patent number 4,952,884
- Issue date Aug 28, 1990
- Pioneer Electronic Corporation
- Akio Tokumo
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Pulse width modulation amplifier circuit
- Patent number 4,949,048
- Issue date Aug 14, 1990
- Pioneer Electronic Corporation
- Akio Tokumo
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Electric power supply unit and electric power supply controlling me...
- Publication number 20040150264
- Publication date Aug 5, 2004
- Kazuyuki Kudo
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
BTL amplifying system
- Publication number 20030160653
- Publication date Aug 28, 2003
- Pioneer Corporation
- Tatsuzo Hasegawa
- H03 - BASIC ELECTRONIC CIRCUITRY