Ryutaro Arakawa

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Led driving semiconductor apparatus provided with controller includ...
- Patent number 7,834,828
- Issue date Nov 16, 2010
- Panasonic Corporation
- Ryutaro Arakawa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Light emitting diode drive apparatus
- Patent number 7,638,954
- Issue date Dec 29, 2009
- Panasonic Corporation
- Takashi Kunimatsu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Reference supply voltage circuit using more than two reference supp...
- Patent number 7,508,254
- Issue date Mar 24, 2009
- Panasonic Corporation
- Yoshiaki Hachiya
- G05 - CONTROLLING REGULATING
Information Patent Grant
Switching power supply device
- Patent number 7,348,766
- Issue date Mar 25, 2008
- Matsushita Electric Industrial Co., Ltd.
- Yoshiaki Hachiya
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
LED driving semiconductor circuit and LED driving apparatus includi...
- Patent number 7,115,888
- Issue date Oct 3, 2006
- Matsushita Electric Industrial Co., Ltd.
- Yoshiaki Hachiya
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
PWM inverter with zero dead time and initial power supply capacitor...
- Patent number 6,021,058
- Issue date Feb 1, 2000
- Matsushita Electric Industrial Co., Ltd.
- Masahiro Yasohara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Semiconductor Device For Driving Led, And Led Driving
- Publication number 20080018267
- Publication date Jan 24, 2008
- Ryutaro Arakawa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Reference supply voltage circuit using more than two reference supp...
- Publication number 20070229148
- Publication date Oct 4, 2007
- Yoshiaki Hachiya
- G05 - CONTROLLING REGULATING
Information Patent Application
LIGHT EMITTING DIODE DRIVE APPARATUS
- Publication number 20070170874
- Publication date Jul 26, 2007
- Matsushita Electric Industrial Co., Ltd.
- Takashi KUNIMATSU
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Switching power supply device
- Publication number 20060273662
- Publication date Dec 7, 2006
- Yoshiaki Hachiya
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
LED driving semiconductor circuit and LED driving apparatus includi...
- Publication number 20060072324
- Publication date Apr 6, 2006
- Yoshiaki Hachiya
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...