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Takahiro Kushida
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Hyogo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Martensitic stainless steel
Patent number
8,157,930
Issue date
Apr 17, 2012
Sumitomo Metal Industries, Ltd.
Hisashi Amaya
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
Martensitic stainless steel
Patent number
7,361,236
Issue date
Apr 22, 2008
Sumitomo Metal Industries, Ltd.
Kunio Kondo
C21 - METALLURGY OF IRON
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
Martensitic stainless steel welded pipe
Patent number
6,379,821
Issue date
Apr 30, 2002
Sumitomo Metal Industries, Ltd.
Takahiro Kushida
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Low alloy steel for oil country tubular goods and method of making
Patent number
6,267,828
Issue date
Jul 31, 2001
Takahiro Kushida
C21 - METALLURGY OF IRON
Information
Patent Grant
Low carbon martensite stainless steel plate
Patent number
6,220,306
Issue date
Apr 24, 2001
Tomohiko Omura
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing high-strength seamless steel pipe having exce...
Patent number
5,938,865
Issue date
Aug 17, 1999
Sumitomo Metal Industries, Ltc.
Kunio Kondo
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Steel product excellent in sulfide cracking resistance
Patent number
5,555,916
Issue date
Sep 17, 1996
Sumitomo Metal Industries, Ltd.
Takahiro Kushida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Martensitic stainless steel suitable for use in oil wells
Patent number
5,383,983
Issue date
Jan 24, 1995
Sumitomo Metal Industries, Ltd.
Kunio Kondo
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
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...
Information
Patent Application
Martensitic stainless steel
Publication number
20050274436
Publication date
Dec 15, 2005
Kunio Kondo
C21 - METALLURGY OF IRON
Information
Patent Application
Martensitic stainless steel
Publication number
20050034790
Publication date
Feb 17, 2005
Hisashi Amaya
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Martensitic stainless steel welded pipe
Publication number
20010030004
Publication date
Oct 18, 2001
Takahiro Kushida
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...