Inventor

KUSHIDA YASUO

JP3 patents

Patents

3 patents

US7248366B2Jul 24, 2007

Method for marking defect and device therefor

NIPPON KOKAN KK20 citations91

US7423744B2Sep 9, 2008

Method for marking defect and device therefor

NIPPON KOKAN KK7 citations72

US7599052B2Oct 6, 2009

Method for marking defect and device therefor

NIPPON KOKAN KK2 citations61