Takashi Ariizumi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacturing seamless pipe
- Patent number 6,073,331
- Issue date Jun 13, 2000
- NKK Corporation
- Tatsuro Katsumura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for manufacturing seamless pipe
- Patent number 5,778,714
- Issue date Jul 14, 1998
- NKK Corporation
- Tatsuro Katsumura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Process for making non-oriented high silicon steel sheet
- Patent number 4,986,341
- Issue date Jan 22, 1991
- Nippon Kokan Kabushiki Kaisha
- Sadakazu Masuda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for automatically controlling width of slab during hot rough...
- Patent number 4,294,094
- Issue date Oct 13, 1981
- Nippon Kokan Kabushiki Kaisha
- Masaru Okado
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...