-
Threaded joint for steel tubes
-
Patent number 8,276,946
-
Issue date Oct 2, 2012
-
Sumitomo Metal Industries, Ltd.
-
Masanari Kimoto
-
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
-
-
Hot press-formed article
-
Patent number 7,399,535
-
Issue date Jul 15, 2008
-
Sumitomo Metal Industries, Ltd.
-
Yukihiro Yoshikawa
-
C21 - METALLURGY OF IRON
-
-
Process for manufacturing clad pipe
-
Patent number 5,584,428
-
Issue date Dec 17, 1996
-
Sumitomo Metal Industries, Ltd.
-
Atsushi Satoh
-
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
-
-
-
Oil well pipe joint
-
Patent number 4,630,849
-
Issue date Dec 23, 1986
-
Sumitomo Metal Industries, Ltd.
-
Kunihiro Fukui
-
E21 - EARTH DRILLING MINING
-
-