Masaomi Nakamura

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Wakayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Disk roll exchanging apparatus for vertical piercing mill and disk...
- Patent number 6,266,987
- Issue date Jul 31, 2001
- Sumitomo Metal Industries, Ltd.
- Hisao Goto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Piercer roll exchanging apparatus for vertical piercing mill and pi...
- Patent number 6,253,593
- Issue date Jul 3, 2001
- Sumitomo Metal Industries, Ltd.
- Hisao Goto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Piercing mill and cannon exchange method
- Patent number 6,158,262
- Issue date Dec 12, 2000
- Sumitomo Metal Industries, Ltd.
- Hisao Goto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...