Inventor
OMURA TOMOHIKO
JP36 patents
⚠️ This page may combine multiple inventors who share the name “OMURA TOMOHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO METAL IND
15 patentsUS6958099B2Oct 25, 2005
High toughness steel material and method of producing steel pipes using same
SUMITOMO METAL IND80 citations96
US6267828B1Jul 31, 2001
Low alloy steel for oil country tubular goods and method of making
SUMITOMO METAL IND80 citations95
US6220306B1Apr 24, 2001
Low carbon martensite stainless steel plate
SUMITOMO METAL IND59 citations95
US7074283B2Jul 11, 2006
Low alloy steel
SUMITOMO METAL IND35 citations92
US6379821B2Apr 30, 2002
Martensitic stainless steel welded pipe
SUMITOMO METAL IND39 citations92
US7635406B2Dec 22, 2009
Method for manufacturing a low alloy steel excellent in corrosion resistance
SUMITOMO METAL IND31 citations91
US7264684B2Sep 4, 2007
Steel for steel pipes
SUMITOMO METAL IND33 citations91
US7531129B2May 12, 2009
Stainless steel for high-pressure hydrogen gas
SUMITOMO METAL IND7 citations73
US7670547B2Mar 2, 2010
Low alloy steel for oil country tubular goods having high sulfide stress cracking resistance
SUMITOMO METAL IND6 citations63
US7396421B2Jul 8, 2008
Duplex stainless steel and manufacturing method thereof
SUMITOMO METAL IND3 citations63
US7896984B2Mar 1, 2011
Method for manufacturing seamless steel pipe for line pipe
SUMITOMO METAL IND3 citations62
US7749431B2Jul 6, 2010
Stainless steel for high-pressure hydrogen gas
SUMITOMO METAL IND4 citations62
US7393597B2Jul 1, 2008
Welded joint made of an austenitic steel
SUMITOMO METAL IND4 citations62
US7648587B2Jan 19, 2010
Steel product for use as line pipe having high HIC resistance and line pipe produced using such steel product
SUMITOMO METAL IND2 citations59
US7959709B2Jun 14, 2011
Method of producing steel for steel pipe excellent in sour-resistance performance
SUMITOMO METAL IND1 citations50
NIPPON STEEL & SUMITOMO METAL CORP
9 patentsUS10407758B2Sep 10, 2019
Steel for oil country tubular goods and method of producing the same
NIPPON STEEL & SUMITOMO METAL CORP2 citations71
US9783876B2Oct 10, 2017
Stainless steel for oil wells and stainless steel pipe for oil wells
NIPPON STEEL & SUMITOMO METAL CORP5 citations69
US10246765B2Apr 2, 2019
Martensitic Cr-containing steel and oil country tubular goods
NIPPON STEEL & SUMITOMO METAL CORP1 citations61
US10316383B2Jun 11, 2019
Austenitic stainless steel and method for producing the same
NIPPON STEEL & SUMITOMO METAL CORP1 citations59
US10036078B2Jul 31, 2018
Low alloy oil well steel pipe and method for manufacturing same
NIPPON STEEL & SUMITOMO METAL CORP1 citations52
US10260125B2Apr 16, 2019
High-strength austenitic stainless steel for high-pressure hydrogen gas
NIPPON STEEL & SUMITOMO METAL CORP0 citations51
US9909198B2Mar 6, 2018
Method for producing a low alloy steel for oil country tubular goods having excellent sulfide stress cracking resistance
NIPPON STEEL & SUMITOMO METAL CORP0 citations42
US10662497B2May 26, 2020
Austenitic stainless steel and method of manufacturing the same
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
US10556298B2Feb 11, 2020
Welded joint and method of manufacturing welded joint
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
OMURA TOMOHIKO
4 patentsUS10266909B2Apr 23, 2019
High-strength austenitic stainless steel for high-pressure hydrogen gas
OMURA TOMOHIKO2 citations71
US8663400B2Mar 4, 2014
Low alloy steel for high-pressure hydrogen gas environment and container for high-pressure hydrogen
OMURA TOMOHIKO4 citations71
US8617462B2Dec 31, 2013
Steel for oil well pipe excellent in sulfide stress cracking resistance
OMURA TOMOHIKO2 citations61
US8168010B2May 1, 2012
Low alloy steel for oil well pipes having excellent sulfide stress cracking resistance
OMURA TOMOHIKO2 citations61