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Hitoshi Asahi
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Futtsu-shi Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
High strength steel pipe for line pipe superior in low temperature...
Patent number
9,719,615
Issue date
Aug 1, 2017
Nippon Steel & Sumitomo Metal Corporation
Takuya Hara
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
Electric resistance welded oil country tubular goods and manufactur...
Patent number
9,126,283
Issue date
Sep 8, 2015
Nippon Steel & Sumitomo Metal Corporation
Mitsuru Sawamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method of production of electric resistance welded steel pipe and h...
Patent number
9,050,681
Issue date
Jun 9, 2015
Nippon Steel & Sumitomo Metal Corporation
Hideki Hamatani
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High-strength welded steel pipe and method for producing the same
Patent number
8,974,610
Issue date
Mar 10, 2015
Nippon Steel & Sumitomo Metal Corporation
Taishi Fujishiro
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steel pipe excellent in deformation characteristics and method of p...
Patent number
8,920,583
Issue date
Dec 30, 2014
Nippon Steel & Sumitomo Metal Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
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 steel pipe for line pipe superior in low temperature...
Patent number
8,764,918
Issue date
Jul 1, 2014
Nippon Steel & Sumitomo Metal Corporation
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High strength steel plate and high strength welded pipe excellent i...
Patent number
8,715,430
Issue date
May 6, 2014
Nippon Steel & Sumitomo Metal Corporation
Takuya Hara
C21 - METALLURGY OF IRON
Information
Patent Grant
High-strength steel pipe and producing method thereof
Patent number
8,685,182
Issue date
Apr 1, 2014
Nippon Steel & Sumitomo Metal Corporation
Kensuke Nagai
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
High strength steel plate, steel pipe with excellent low temperatur...
Patent number
8,110,292
Issue date
Feb 7, 2012
Nippon Steel Corporation
Taishi Fujishiro
C21 - METALLURGY OF IRON
Information
Patent Grant
High strength thick welded steel pipe for line pipe superior in low...
Patent number
8,084,144
Issue date
Dec 27, 2011
Nippon Steel Corporation
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High-strength steel sheet and high-strength steel pipe excellent in...
Patent number
8,070,887
Issue date
Dec 6, 2011
Nippon Steel Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Grant
Ultrahigh strength welded joint and ultrahigh strength welded steel...
Patent number
8,049,131
Issue date
Nov 1, 2011
Nippon Steel Corporation
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Welded steel pipe for high strength line pipe superior in low tempe...
Patent number
8,039,118
Issue date
Oct 18, 2011
Nippon Steel Corporation
Takuya Hara
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
Steel plates for ultra-high-strength linepipes and ultra-high-stren...
Patent number
7,736,447
Issue date
Jun 15, 2010
Nippon Steel Corporation
Hitoshi Asahi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High-strength steel pipe excellent in low temperature toughness and...
Patent number
7,601,231
Issue date
Oct 13, 2009
Nippon Steel Corporation
Takuya Hara
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
Steel pipe excellent in formability and method of producing the same
Patent number
6,866,725
Issue date
Mar 15, 2005
Nippon Steel Corporation
Nobuhiro Fujita
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
Super-high-strength line pipe excellent in low temperature toughnes...
Patent number
6,532,995
Issue date
Mar 18, 2003
Nippon Steel Corporation
Hitoshi Asahi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steel having excellent outer surface SCC resistance for pipeline
Patent number
6,517,643
Issue date
Feb 11, 2003
Nippon Steel Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Grant
Ultra-high strength, weldable steels with excellent ultra-low tempe...
Patent number
6,264,760
Issue date
Jul 24, 2001
Exxonmobil Upstream Research Company
Hiroshi Tamehiro
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing ultra-high strength, weldable steels with supe...
Patent number
6,248,191
Issue date
Jun 19, 2001
Exxonmobil Upstream Research Company
Michael J. Luton
C21 - METALLURGY OF IRON
Information
Patent Grant
Corrosion resisting steel and corrosion resisting oil well pipe hav...
Patent number
6,248,187
Issue date
Jun 19, 2001
Nippon Steel Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Grant
Ultra-high strength, weldable, boron-containing steels with superio...
Patent number
6,228,183
Issue date
May 8, 2001
Exxonmobil Upstream Research Company
Narasimha-Rao V. Bangaru
C21 - METALLURGY OF IRON
Information
Patent Grant
Ultra-high strength, weldable, essentially boron-free steels with s...
Patent number
6,224,689
Issue date
May 1, 2001
Exxonmobil Upstream Research Company
Jayoung Koo
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
HIGH STRENGTH STEEL PIPE FOR LINE PIPE SUPERIOR IN LOW TEMPERATURE...
Publication number
20140227126
Publication date
Aug 14, 2014
NIPPON STEEL & SUMITOMO METAL CORPORATION
Takuya Hara
C21 - METALLURGY OF IRON
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
ELECTRIC RESISTANCE WELDED OIL COUNTRY TUBULAR GOODS AND MANUFACTUR...
Publication number
20130092280
Publication date
Apr 18, 2013
NIPPON STEEL & SUMITOMO METAL CORPORATION
Mitsuru Sawamura
C21 - METALLURGY OF IRON
Information
Patent Application
HIGH-STRENGTH WELDED STEEL PIPE AND METHOD FOR PRODUCING THE SAME
Publication number
20120291907
Publication date
Nov 22, 2012
Taishi Fujishiro
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
High-strength steel pipe and producing method thereof
Publication number
20120118425
Publication date
May 17, 2012
Kensuke Nagai
C21 - METALLURGY OF IRON
Information
Patent Application
Ultrahigh strength welded joint and ultrahigh strength welded steel...
Publication number
20110250471
Publication date
Oct 13, 2011
NIPPON STEEL CORPORATION
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
HIGH STRENGTH STEEL PLATE, STEEL PIPE WITH EXCELLENT LOW TEMPERATU...
Publication number
20110023991
Publication date
Feb 3, 2011
Taishi Fujishiro
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
WELDED STEEL PIPE FOR HIGH STRENGTH LINE PIPE SUPERIOR IN LOW TEMPE...
Publication number
20100330388
Publication date
Dec 30, 2010
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
High strength steel pipe for line pipe superior in low temperature...
Publication number
20100236668
Publication date
Sep 23, 2010
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
STEEL PIPE EXCELLENT IN DEFORMATION CHARACTERISTICS AND METHOD OF P...
Publication number
20100119860
Publication date
May 13, 2010
Asahi Hitoshi
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD OF PRODUCTION OF ELECTRIC RESISTANCE WELDED STEEL PIPE AND H...
Publication number
20100104888
Publication date
Apr 29, 2010
Hideki Hamatani
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
HIGH STRENGTH THICK WELDED STEEL PIPE FOR LINE PIPE SUPERIOR IN LOW...
Publication number
20100003535
Publication date
Jan 7, 2010
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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
Steel pipe for high strength line pipe superior in strain aging res...
Publication number
20090092514
Publication date
Apr 9, 2009
Hitoshi Asahi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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
High Strength Steel Plate and High Strength Welded Pipe Excellent i...
Publication number
20090025835
Publication date
Jan 29, 2009
Takuya Hara
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
High Strength Dual Phase Steel With Low Yield Ratio, High Toughness...
Publication number
20070193666
Publication date
Aug 23, 2007
EXXONMOBIL UPSTREAM RESEARCH COMPANY
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Application
Steel plates for ultra-high-strength linepipes and ultra-high-stren...
Publication number
20070125462
Publication date
Jun 7, 2007
Hitoshi Asahi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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...
Information
Patent Application
Ultrahigh strength welded joint and ultrahigh strength welded steel...
Publication number
20050016980
Publication date
Jan 27, 2005
Takuya Hara
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
High-strength steel excellent in low temperature toughness and toug...
Publication number
20040031544
Publication date
Feb 19, 2004
Takuya Hara
C21 - METALLURGY OF IRON
Information
Patent Application
High-strength steel sheet and high-strength steel pipe excellent in...
Publication number
20030217795
Publication date
Nov 27, 2003
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Application
Steel pipe excellent in formability and method for producing thereof
Publication number
20030116238
Publication date
Jun 26, 2003
Nobuhiro Fujita
C21 - METALLURGY OF IRON
Information
Patent Application
High strength steel material for oil well, excellent in sulfide str...
Publication number
20020104592
Publication date
Aug 8, 2002
Shunji Sakamoto
C21 - METALLURGY OF IRON