Koichi Takeshita

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Osaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Input-voltage-abnormality detection method and power source device
- Patent number 10,481,184
- Issue date Nov 19, 2019
- Sumitomo Electric Industries, Ltd
- Fumio Urakawa
- G01 - MEASURING TESTING
Information Patent Grant
Power conversion device and method for determining operational stat...
- Patent number 10,476,259
- Issue date Nov 12, 2019
- Sumitomo Electric Industries, Ltd
- Toshiaki Okumura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply unit and method for backfeed protection thereof
- Patent number 10,355,519
- Issue date Jul 16, 2019
- Sumitomo Electric Industries, Ltd
- Tetsuo Akita
- G01 - MEASURING TESTING
Information Patent Grant
Power conversion device and three-phase alternating current power s...
- Patent number 9,722,508
- Issue date Aug 1, 2017
- Sumitomo Electric Industries, Ltd
- Naoki Ayai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
POWER CONVERSION DEVICE AND METHOD FOR DETERMINING OPERATIONAL STAT...
- Publication number 20190181635
- Publication date Jun 13, 2019
- Sumitomo Electric Industries, Ltd.
- Toshiaki Okumura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER SUPPLY UNIT AND METHOD FOR BACKFEED PROTECTION THEREOF
- Publication number 20190081505
- Publication date Mar 14, 2019
- Sumitomo Electric Industries, Ltd.
- Tetsuo Akita
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INPUT-VOLTAGE-ABNORMALITY DETECTION METHOD AND POWER SOURCE DEVICE
- Publication number 20180217187
- Publication date Aug 2, 2018
- Sumitomo Electric Industries, Ltd.
- Fumio URAKAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION DEVICE AND THREE-PHASE ALTERNATING CURRENT POWER S...
- Publication number 20160329829
- Publication date Nov 10, 2016
- Naoki Ayai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER