Tadao Otani

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Heat transfer pipe for refrigerant mixture
- Patent number 6,412,549
- Issue date Jul 2, 2002
- Hitachi, Ltd.
- Masaaki Itoh
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Refrigeration cycle
- Patent number 6,018,963
- Issue date Feb 1, 2000
- Hitachi, Ltd.
- Masaaki Itoh
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Inner surface grooved heat transfer tube
- Patent number 5,992,513
- Issue date Nov 30, 1999
- Hitachi Cable, Ltd.
- Yoshio Suzuki
- F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Heat transfer pipe for refrigerant mixture
- Publication number 20020070011
- Publication date Jun 13, 2002
- Masaaki Itoh
- F28 - HEAT EXCHANGE IN GENERAL