Inventor
KOSHIGA FUSAO
6 patents
Patents
6 patentsUS4145594AMar 20, 1979
Method for longitudinally seam-welding pipe-bland for welded steel pipe from inside along groove
NIPPON KOKAN KK15 citations72
US4034179AJul 5, 1977
Method of multiple electrode gas shielded arc welding
NIPPON KOKAN KK13 citations72
US4013868AMar 22, 1977
Method of multiple gas shielded arc welding
NIPPON KOKAN KK10 citations72
US4107503AAug 15, 1978
Method for eliminating residual magnetism in pipe-blank for welded steel pipe longitudinally seam-welded from inside
NIPPON KOKAN KK10 citations71
US4238659ADec 9, 1980
Preventing magnetization of pipe blank in GMA welding
NIPPON KOKAN KK4 citations60
US4110589AAug 29, 1978
Method for longitudinally seam-welding pipe-blank for welded steel pipe from the inside along a groove
NIPPON KOKAN KK2 citations60