Toshifumi Kojima

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of liquid phase diffusion bonding of metal bodies
- Patent number 4,988,035
- Issue date Jan 29, 1991
- Nippon Kokan Kabushiki Kaisha
- Yasuhiro Ueno
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Preventing magnetization of pipe blank in GMA welding
- Patent number 4,238,659
- Issue date Dec 9, 1980
- Nippon Kokan Kabushiki Kaisha
- Fusao Koshiga
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for longitudinally seam-welding pipe-blank for welded steel...
- Patent number 4,110,589
- Issue date Aug 29, 1978
- Nippon Kokan Kabushiki Kaisha
- Fusao Koshiga
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for eliminating residual magnetism in pipe-blank for welded...
- Patent number 4,107,503
- Issue date Aug 15, 1978
- Nippon Kokan Kabushiki Kaisha
- Fusao Koshiga
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR