Keiji Ogawa

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Yamatokoriyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power controller and compressor for refrigeration system
- Patent number 6,704,202
- Issue date Mar 9, 2004
- Matsushita Refrigeration Company
- Koji Hamaoka
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerating apparatus, and refrigerator control and brushless mot...
- Patent number 6,014,004
- Issue date Jan 11, 2000
- Matsushita Refrigeration Company
- Kouji Hamaoka
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerating apparatus and refrigerator control and brushless moto...
- Patent number 5,970,733
- Issue date Oct 26, 1999
- Matsushita Refrigeration Company
- Kouji Hamaoka
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerating apparatus, and refrigerator control and brushless mot...
- Patent number 5,857,349
- Issue date Jan 12, 1999
- Matsushita Refrigeration Company
- Kouji Hamaoka
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...