Ryosaku Nawata

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Kitakyusyu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Wear- and seizing-resistant roll for hot rolling and method of maki...
- Patent number 5,514,065
- Issue date May 7, 1996
- Hitachi Metals, Ltd.
- Akira Noda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Compound roll and method of producing same
- Patent number 5,484,372
- Issue date Jan 16, 1996
- Hitachi Metals, Ltd.
- Ryosaku Nawata
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of producing a compound roll
- Patent number 5,355,932
- Issue date Oct 18, 1994
- Hitachi Metals, Ltd.
- Ryosaku Nawata
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method of producing a compound roll
- Patent number 5,305,522
- Issue date Apr 26, 1994
- Hitachi Metals, Ltd.
- Ryosaku Nawata
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...