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Tomohiko Omura
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Sakyo-ku, Kyoto-shi, Kyoto, 608-8101, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Austenitic stainless steel and method of manufacturing the same
Patent number
10,662,497
Issue date
May 26, 2020
Nippon Steel Corporation
Jun Nakamura
C21 - METALLURGY OF IRON
Information
Patent Grant
Welded joint and method of manufacturing welded joint
Patent number
10,556,298
Issue date
Feb 11, 2020
Nippon Steel Corporation
Kana Jotoku
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steel for oil country tubular goods and method of producing the same
Patent number
10,407,758
Issue date
Sep 10, 2019
Nippon Steel Corporation
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
Austenitic stainless steel and method for producing the same
Patent number
10,316,383
Issue date
Jun 11, 2019
Nippon Steel & Sumitomo Metal Corporation
Etsuo Dan
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
High-strength austenitic stainless steel for high-pressure hydrogen...
Patent number
10,266,909
Issue date
Apr 23, 2019
Nippon Steel & Sumitomo Metal Corporation
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
High-strength austenitic stainless steel for high-pressure hydrogen...
Patent number
10,260,125
Issue date
Apr 16, 2019
Nippon Steel & Sumitomo Metal Corporation
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
Martensitic Cr-containing steel and oil country tubular goods
Patent number
10,246,765
Issue date
Apr 2, 2019
Nippon Steel & Sumitomo Metal Corporation
Tomohiko Omura
E21 - EARTH DRILLING MINING
Information
Patent Grant
Low alloy oil well steel pipe and method for manufacturing same
Patent number
10,036,078
Issue date
Jul 31, 2018
Nippon Steel & Sumitomo Metal Corporation
Yuji Arai
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method for producing a low alloy steel for oil country tubular good...
Patent number
9,909,198
Issue date
Mar 6, 2018
Nippon Steel & Sumitomo Metal Corporation
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
Stainless steel for oil wells and stainless steel pipe for oil wells
Patent number
9,783,876
Issue date
Oct 10, 2017
Nippon Steel & Sumitomo Metal Corporation
Shinjiro Nakatsuka
C21 - METALLURGY OF IRON
Information
Patent Grant
Oil-well steel pipe having excellent sulfide stress cracking resist...
Patent number
9,777,352
Issue date
Oct 3, 2017
Nippon Steel & Sumitomo Metal Corporation
Atsushi Soma
C21 - METALLURGY OF IRON
Information
Patent Grant
Quenching method for steel pipe
Patent number
9,546,408
Issue date
Jan 17, 2017
Nippon Steel & Sumitomo Metal Corporation
Akihiro Sakamoto
C21 - METALLURGY OF IRON
Information
Patent Grant
Austenitic steel welded joint
Patent number
9,211,601
Issue date
Dec 15, 2015
Nippon Steel & Sumitomo Metal Corporation
Hiroyuki Hirata
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steel for steel tube with excellent sulfide stress cracking resistance
Patent number
9,175,371
Issue date
Nov 3, 2015
Nippon Steel & Sumitomo Metal Corporation
Mitsuhiro Numata
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing seamless steel pipe for oil wells excellent in...
Patent number
9,017,494
Issue date
Apr 28, 2015
Nippon Steel & Sumitomo Metal Corporation
Yuji Arai
C21 - METALLURGY OF IRON
Information
Patent Grant
Austenitic stainless steel for hydrogen gas and a method for its ma...
Patent number
8,696,835
Issue date
Apr 15, 2014
Nippon Steel & Sumitomo Metal Corporation
Hiroyuki Semba
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Low alloy steel for high-pressure hydrogen gas environment and cont...
Patent number
8,663,400
Issue date
Mar 4, 2014
Sumitomo Metal Industries, Ltd.
Tomohiko Omura
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steel for oil well pipe excellent in sulfide stress cracking resist...
Patent number
8,617,462
Issue date
Dec 31, 2013
Nippon Steel & Sumitomo Metal Corporation
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of producing steel for steel pipe excellent in sour-resistan...
Patent number
8,262,767
Issue date
Sep 11, 2012
Sumitomo Metal Industries, Ltd.
Mitsuhiro Numata
C21 - METALLURGY OF IRON
Information
Patent Grant
Low alloy steel for oil well pipes having excellent sulfide stress...
Patent number
8,168,010
Issue date
May 1, 2012
Sumitomo Metal Industries, Ltd.
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of producing steel for steel pipe excellent in sour-resistan...
Patent number
7,959,709
Issue date
Jun 14, 2011
Sumitomo Metal Industries, Ltd.
Mitsuhiro Numata
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for manufacturing seamless steel pipe for line pipe
Patent number
7,896,984
Issue date
Mar 1, 2011
Sumitomo Metal Industries, Ltd.
Kenji Kobayashi
C21 - METALLURGY OF IRON
Information
Patent Grant
Stainless steel for high-pressure hydrogen gas
Patent number
7,749,431
Issue date
Jul 6, 2010
Sumitomo Metal Industries, Ltd.
Masaaki Igarashi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Low alloy steel for oil country tubular goods having high sulfide s...
Patent number
7,670,547
Issue date
Mar 2, 2010
Sumitomo Metal Industries, Ltd.
Kenji Kobayashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steel product for use as line pipe having high HIC resistance and l...
Patent number
7,648,587
Issue date
Jan 19, 2010
Sumitomo Metal Industries, Ltd.
Takahiro Kushida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method for manufacturing a low alloy steel excellent in corrosion r...
Patent number
7,635,406
Issue date
Dec 22, 2009
Sumitomo Metal Industries, Ltd.
Mitsuhiro Numata
C21 - METALLURGY OF IRON
Information
Patent Grant
Stainless steel for high-pressure hydrogen gas
Patent number
7,531,129
Issue date
May 12, 2009
Sumitomo Metal Industries, Ltd.
Masaaki Igarashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Duplex stainless steel and manufacturing method thereof
Patent number
7,396,421
Issue date
Jul 8, 2008
Sumitomo Metal Industries, Ltd.
Tomohiko Omura
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Welded joint made of an austenitic steel
Patent number
7,393,597
Issue date
Jul 1, 2008
Sumitomo Metal Industries, Ltd.
Kazuhiko Ogawa
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steel for steel pipes
Patent number
7,264,684
Issue date
Sep 4, 2007
Sumitomo Metal Industries, Ltd.
Mitsuhiro Numata
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
Information
Patent Application
STEEL PIPE FOR FUEL INJECTION PIPE, AND FUEL INJECTION PIPE USING SAME
Publication number
20220136469
Publication date
May 5, 2022
NIPPON STEEL CORPORATION
Taizo MAKINO
C21 - METALLURGY OF IRON
Information
Patent Application
Austenitic Stainless Steel and Method of Manufacturing Austenitic S...
Publication number
20180258505
Publication date
Sep 13, 2018
NIPPON STEEL & SUMITOMO METAL CORPORATION
Hiroyuki Hirata
C21 - METALLURGY OF IRON
Information
Patent Application
LOW ALLOY STEEL FOR OIL COUNTRY TUBULAR GOODS HAVING EXCELLENT SULF...
Publication number
20180135154
Publication date
May 17, 2018
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tomohiko OMURA
C21 - METALLURGY OF IRON
Information
Patent Application
AUSTENITIC STAINLESS STEEL AND METHOD OF MANUFACTURING THE SAME
Publication number
20170314092
Publication date
Nov 2, 2017
NIPPON STEEL & SUMITOMO METAL CORPORATION
Jun NAKAMURA
C21 - METALLURGY OF IRON
Information
Patent Application
AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING THE SAME
Publication number
20170029911
Publication date
Feb 2, 2017
NIPPON STEEL & SUMITOMO METAL CORPORATION
Etsuo DAN
C21 - METALLURGY OF IRON
Information
Patent Application
WELDED JOINT AND METHOD OF MANUFACTURING WELDED JOINT
Publication number
20160354870
Publication date
Dec 8, 2016
NIPPON STEEL & SUMITOMO METAL CORPORATION
Kana JOTOKU
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
MARTENSITIC Cr-CONTAINING STEEL AND OIL COUNTRY TUBULAR GOODS
Publication number
20160326617
Publication date
Nov 10, 2016
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Application
HIGH-STRENGTH AUSTENITIC STAINLESS STEEL FOR HIGH-PRESSURE HYDROGEN...
Publication number
20160304983
Publication date
Oct 20, 2016
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tomohiko OMURA
C21 - METALLURGY OF IRON
Information
Patent Application
LOW ALLOY OIL WELL STEEL PIPE AND METHOD FOR MANUFACTURING SAME
Publication number
20160160307
Publication date
Jun 9, 2016
NIPPON STEEL & SUMITOMO METAL CORPORATION
Yuji ARAI
C21 - METALLURGY OF IRON
Information
Patent Application
LOW ALLOY STEEL FOR OIL COUNTRY TUBULAR GOODS HAVING EXCELLENT SULF...
Publication number
20150247226
Publication date
Sep 3, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL FOR OIL COUNTRY TUBULAR GOODS AND METHOD OF PRODUCING THE SAME
Publication number
20150114527
Publication date
Apr 30, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Application
LOW ALLOY STEEL
Publication number
20150047749
Publication date
Feb 19, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Hiroyuki Hirata
C21 - METALLURGY OF IRON
Information
Patent Application
STAINLESS STEEL FOR OIL WELLS AND STAINLESS STEEL PIPE FOR OIL WELLS
Publication number
20150047831
Publication date
Feb 19, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Shinjiro Nakatsuka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
LOW ALLOY STEEL
Publication number
20140348695
Publication date
Nov 27, 2014
Hiroyuki Hirata
C21 - METALLURGY OF IRON
Information
Patent Application
OIL-WELL STEEL PIPE HAVING EXCELLENT SULFIDE STRESS CRACKING RESIST...
Publication number
20140205487
Publication date
Jul 24, 2014
NIPPON STEEL & SUMITOMO METAL CORPORATION
Atsushi Soma
C21 - METALLURGY OF IRON
Information
Patent Application
AUSTENITIC STEEL WELDED JOINT
Publication number
20140186101
Publication date
Jul 3, 2014
NIPPON STEEL & SUMITOMO METAL CORPORATION
Hiroyuki Hirata
C21 - METALLURGY OF IRON
Information
Patent Application
HIGH-STRENGTH AUSTENITIC STAINLESS STEEL FOR HIGH-PRESSURE HYDROGEN...
Publication number
20140017111
Publication date
Jan 16, 2014
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Application
QUENCHING METHOD FOR STEEL PIPE
Publication number
20140007994
Publication date
Jan 9, 2014
NIPPON STEEL & SUMITOMO METAL CORPORATION
Akihiro Sakamoto
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL FOR STEEL TUBE WITH EXCELLENT SULFIDE STRESS CRACKING RESISTANCE
Publication number
20130084205
Publication date
Apr 4, 2013
NIPPON STEEL & SUMMITOMA METALCORPORATION
Mitsuhiro Numata
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR PRODUCING SEAMLESS STEEL PIPE FOR OIL WELLS EXCELLENT IN...
Publication number
20110297279
Publication date
Dec 8, 2011
Sumitomo Metal Industries, Ltd.
Yuji Arai
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD OF PRODUCING STEEL FOR STEEL PIPE EXCELLENT IN SOUR-RESISTAN...
Publication number
20110209581
Publication date
Sep 1, 2011
Sumitomo Metal Industries, Ltd.
Mitsuhiro NUMATA
C21 - METALLURGY OF IRON
Information
Patent Application
AUSTENITIC STAINLESS STEEL FOR HYDROGEN GAS AND A METHOD FOR ITS MA...
Publication number
20110064649
Publication date
Mar 17, 2011
Sumitomo Metal Industries, Ltd.
Hiroyuki SEMBA
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
METHOD OF PRODUCING STEEL FOR STEEL PIPE EXCELLENT IN SOUR-RESISTAN...
Publication number
20100071509
Publication date
Mar 25, 2010
Mitsuhiro Numata
C21 - METALLURGY OF IRON
Information
Patent Application
LOW ALLOY STEEL FOR HIGH-PRESSURE HYDROGEN GAS ENVIRONMENT AND CONT...
Publication number
20090285713
Publication date
Nov 19, 2009
Sumitomo Metal Industries, Ltd.
Tomohiko Omura
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Low alloy steel for oil country tubular goods and seamless steel pipe
Publication number
20090098403
Publication date
Apr 16, 2009
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Application
Low alloy steel, seamless steel oil country tubular goods, and meth...
Publication number
20090047166
Publication date
Feb 19, 2009
Kuniaki Tomomatsu
C21 - METALLURGY OF IRON
Information
Patent Application
Seamless steel pipe for line pipe and a method for its manufacture
Publication number
20080216928
Publication date
Sep 11, 2008
Kenji Kobayashi
C21 - METALLURGY OF IRON
Information
Patent Application
Low alloy steel for oil country tubular goods having high sulfide s...
Publication number
20080105337
Publication date
May 8, 2008
Kenji Kobayashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Steel for oil well pipe excellent in sulfide stress cracking resist...
Publication number
20080017284
Publication date
Jan 24, 2008
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Application
Steel Product for Use as Line Pipe Having High Hic Resistance and L...
Publication number
20070217942
Publication date
Sep 20, 2007
Sumitomo Metal Industries, Ltd.
Takahiro Kushida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...