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Patents Grants
last 30 patents
Information
Patent Grant
Pipeline and manufacturing method thereof
Patent number
10,449,636
Issue date
Oct 22, 2019
Nippon Steel Corporation
Yukinobu Nagata
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Pipeline and manufacturing method thereof
Patent number
9,737,962
Issue date
Aug 22, 2017
Nippon Steel & Sumitomo Metal Corporation
Yukinobu Nagata
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Oil country tubular goods with dual phase structure and producing m...
Patent number
9,188,253
Issue date
Nov 17, 2015
Nippon Steel & Sumitomo Metal Corporation
Mitsuru Sawamura
C21 - METALLURGY OF IRON
Information
Patent Grant
Liquid phase diffusion bonded pipe joint
Patent number
8,955,887
Issue date
Feb 17, 2015
Nippon Steel & Sumitomo Metal Corporation
Eiji Tsuru
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steel plate or steel pipe with small occurrence of Bauschinger effe...
Patent number
8,815,024
Issue date
Aug 26, 2014
Nippon Steel & Sumitomo Metal Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Grant
High strength welded steel tube superior in hydrogen embrittlement...
Patent number
8,653,400
Issue date
Feb 18, 2014
Nippon Steel & Sumitomo Metal Corporation
Eiji Tsuru
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
UOE steel pipe excellent in collapse strength and method of product...
Patent number
7,967,926
Issue date
Jun 28, 2011
Nippon Steel Corporation
Eiji Tsuru
C21 - METALLURGY OF IRON
Information
Patent Grant
UOE steel pipe excellent in collapse strength and method of product...
Patent number
7,892,368
Issue date
Feb 22, 2011
Nippon Steel Corporation
Eiji Tsuru
C21 - METALLURGY OF IRON
Information
Patent Grant
Oil country tubular goods excellent in collapse characteristics aft...
Patent number
7,459,033
Issue date
Dec 2, 2008
Nippon Steel Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Grant
High-strength steel pipe excellent in formability and burst resistance
Patent number
6,782,921
Issue date
Aug 31, 2004
Nippon Steel Corporation
Eiji Tsuru
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Pipe joint
Patent number
6,705,648
Issue date
Mar 16, 2004
Nippon Steel Corporation
Kazushi Maruyama
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Alloy foil for liquid-phase diffusion bonding bondable in oxidizing...
Patent number
6,264,761
Issue date
Jul 24, 2001
Yasushi Hasegawa
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Oil well pipe threaded joint
Patent number
6,176,524
Issue date
Jan 23, 2001
Nippon Steel Corporation
Eiji Tsuru
E21 - EARTH DRILLING MINING
Information
Patent Grant
Joint for steel pipe having high galling resistance and surface tre...
Patent number
6,027,145
Issue date
Feb 22, 2000
Nippon Steel Corporation
Eiji Tsuru
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Fe-based alloy foil for liquid-phase diffusion bonding of Fe-based...
Patent number
5,919,577
Issue date
Jul 6, 1999
Nippon Steel Corporation
Yasushi Hasegawa
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Threaded joint for oil-well pipe
Patent number
4,830,411
Issue date
May 16, 1989
Nippon Steel Corporation
Eiji Tsuru
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
PIPELINE AND MANUFACTURING METHOD THEREOF
Publication number
20170304953
Publication date
Oct 26, 2017
NIPPON STEEL & SUMITOMO METAL CORPORATION
Yukinobu NAGATA
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
PIPELINE AND MANUFACTURING METHOD THEREOF
Publication number
20150004426
Publication date
Jan 1, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Yukinobu Nagata
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
OIL COUNTRY TUBULAR GOODS WITH DUAL PHASE STRUCTURE AND PRODUCING M...
Publication number
20130118632
Publication date
May 16, 2013
NIPPON STEEL & SUMITOMO METAL CORPORATION
Mitsuru Sawamura
C21 - METALLURGY OF IRON
Information
Patent Application
UOE steel pipe excellent in collapse strength and method of product...
Publication number
20090320965
Publication date
Dec 31, 2009
NIPPON STEEL CORPORATION
Eiji Tsuru
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Oil well pipe for expandable tubular applications excellent in post...
Publication number
20090044882
Publication date
Feb 19, 2009
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Application
Steel Plate or Steel Pipe with Small Occurrence of Bauschinger Effe...
Publication number
20080286504
Publication date
Nov 20, 2008
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Application
High Strength Welded Steel Tube Superior in Hydrogen Embrittlement...
Publication number
20080257008
Publication date
Oct 23, 2008
Eiji Tsuru
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
OIL COUNTRY TUBULAR GOODS EXCELLENT IN COLLAPSE CHARACTERISTICS AFT...
Publication number
20050217768
Publication date
Oct 6, 2005
Hitoshi Asahi
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Uoe steel pipe with excellent crash resistance, and method of manuf...
Publication number
20050178456
Publication date
Aug 18, 2005
Eiji Tsuru
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...