Koichi Hagino

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Hyogo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Switching power supply circuit
- Patent number 7,884,584
- Issue date Feb 8, 2011
- Ricoh Company, Ltd.
- Katsuhisa Furuse
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Output circuit
- Patent number 7,663,406
- Issue date Feb 16, 2010
- Ricoh Company, Ltd.
- Koichi Hagino
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electric power supply circuit and electronic device
- Patent number 7,646,179
- Issue date Jan 12, 2010
- Ricoh Company, Ltd.
- Koichi Hagino
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Compact voltage step-up/step-down switching regulator
- Patent number 7,619,400
- Issue date Nov 17, 2009
- Ricoh Company, Ltd.
- Koichi Hagino
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply device, and LED device and electronic device using same
- Patent number 7,564,196
- Issue date Jul 21, 2009
- Ricoh Company, Ltd.
- Yohichi Shiwaya
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
SOUND AND MUSIC PLAYBACK DEVICE
- Publication number 20110187452
- Publication date Aug 4, 2011
- RICOH COMPANY, LTD.
- Yukihiro Imai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SWITCHING POWER SUPPLY CIRCUIT
- Publication number 20100013447
- Publication date Jan 21, 2010
- RICOH COMPANY, LTD.,
- Katsuhisa FURUSE
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
OUTPUT CIRCUIT
- Publication number 20090072864
- Publication date Mar 19, 2009
- RICOH COMPANY, LTD.
- Koichi HAGINO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER SUPPLY DEVICE, AND LED DEVICE AND ELECTRONIC DEVICE USING SAME
- Publication number 20080231209
- Publication date Sep 25, 2008
- Yohichi Shiwaya
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Electric power supply circuit and electronic device
- Publication number 20070216386
- Publication date Sep 20, 2007
- Koichi Hagino
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Compact voltage step-up/step-down switching regulator
- Publication number 20070120546
- Publication date May 31, 2007
- Koichi Hagino
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER