Kazuo Watanabe

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Kitakyusyushi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing metal pipe with longitudinally differentiat...
- Patent number 4,603,806
- Issue date Aug 5, 1986
- Nippon Steel Corporation
- Kazuo Watanabe
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Press-rolling process for producing a metal tubular product
- Patent number 4,455,849
- Issue date Jun 26, 1984
- Nippon Steel Corporation
- Shigeru Uchida
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for manufacturing metal sections
- Patent number 4,407,056
- Issue date Oct 4, 1983
- Nippon Steel Corporation
- Kazuo Watanabe
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for rolling steel sections having flanges or flange-like por...
- Patent number 4,334,419
- Issue date Jun 15, 1982
- Nippon Steel Corporation
- Kanichi Kishikawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...