Ryuji Yasuda

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pipe with closure portion, heat exchanger header and method of prod...
- Patent number 5,927,397
- Issue date Jul 27, 1999
- Calsonic Corporation
- Ryuji Yasuda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Pipe and method for producing the same
- Patent number 5,924,457
- Issue date Jul 20, 1999
- Calsonic Corporation
- Hiroyuki Inaba
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Pipe with closure portion, heat exchanger header and method of prod...
- Patent number 5,799,397
- Issue date Sep 1, 1998
- Calsonic Corporation
- Ryuji Yasuda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Header pipe for heat exchanger
- Patent number 5,771,965
- Issue date Jun 30, 1998
- Calsonic Corporation
- Hiroyuki Inaba
- F28 - HEAT EXCHANGE IN GENERAL