Yoshiyuki Kuroiwa

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Arida-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for straightening tube and straightening roll
- Patent number 8,783,085
- Issue date Jul 22, 2014
- Nippon Steel & Sumitomo Metal Corporation
- Yoshiyuki Kuroiwa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Blasting device for steel pipe inner surface, blasting method for s...
- Patent number 8,016,642
- Issue date Sep 13, 2011
- Sumitomo Metal Industries, Ltd.
- Yoshiyuki Kuroiwa
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR STRAIGHTENING TUBE AND STRAIGHTENING ROLL
- Publication number 20120304724
- Publication date Dec 6, 2012
- Sumitomo Metal Industries, Ltd.
- Yoshiyuki KUROIWA
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
METHOD FOR PRODUCING THREADED JOINT
- Publication number 20110232432
- Publication date Sep 29, 2011
- Sumitomo Metal Industries, Ltd.
- Yoshiyuki Kuroiwa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Scale Removing Method and Scale Removing Apparatus
- Publication number 20110065363
- Publication date Mar 17, 2011
- Sumitomo Metal Industries, Ltd.
- Yoshiyuki Kuroiwa
- B24 - GRINDING POLISHING
Information Patent Application
Blasting device for steel pipe inner surface, blasting method for s...
- Publication number 20090233531
- Publication date Sep 17, 2009
- Yoshiyuki Kuroiwa
- B24 - GRINDING POLISHING