Takehiko Yanagida

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Tsuchiura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing a heat transfer tube for single-phase flow
- Patent number 4,794,775
- Issue date Jan 3, 1989
- Hitachi, Ltd.
- Heikichi Kuwahara
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Construction of a heat transfer wall of a heat transfer pipe
- Patent number 4,715,436
- Issue date Dec 29, 1987
- Hitachi, Ltd.
- Kenji Takahashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Heat transfer tube for single phase flow
- Patent number 4,690,211
- Issue date Sep 1, 1987
- Hitachi, Ltd.
- Heikichi Kuwahara
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for producing a heat transfer wall for vaporizing liquids
- Patent number 4,653,163
- Issue date Mar 31, 1987
- Hitachi, Ltd.
- Heikichi Kuwahara
- F28 - HEAT EXCHANGE IN GENERAL