Michiaki Yama

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Kyoto-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Switching regulator soft start circuitry using a D/A converter
- Patent number 7,675,279
- Issue date Mar 9, 2010
- Rohm Co., Ltd.
- Naruhiro Okamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Step-up/step-down DC-DC converter and portable device employing it
- Patent number 6,958,595
- Issue date Oct 25, 2005
- Rohm Co., Ltd.
- Kenichi Niiyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Load driver circuit
- Patent number 6,377,109
- Issue date Apr 23, 2002
- Rohm Co., Ltd.
- Michiaki Yama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Pulse generator provided with a duty-factor limiting function
- Patent number 6,194,936
- Issue date Feb 27, 2001
- Rohm Co., Ltd.
- Michiaki Yama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Semiconductor integrated circuit device having gates arranged in a...
- Patent number 6,121,657
- Issue date Sep 19, 2000
- Rohm Co. Ltd.
- Michiaki Yama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
DC motor control circuit
- Patent number 5,696,871
- Issue date Dec 9, 1997
- Rohm Co., Ltd.
- Michiaki Yama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
SWITCHING REGULATOR
- Publication number 20090273324
- Publication date Nov 5, 2009
- Rohm Co., Ltd.
- Naruhiro Okamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Step-up/step-down DC-DC converter and portable device employing it
- Publication number 20050007089
- Publication date Jan 13, 2005
- ROHM CO., LTD.
- Kenichi Niiyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER