Inventor
TAKABE HIDEKI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TAKABE HIDEKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL & SUMITOMO METAL CORP
5 patentsUS9322087B2Apr 26, 2016
Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well
NIPPON STEEL & SUMITOMO METAL CORP5 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
US10995394B2May 4, 2021
Steel bar for downhole member, and downhole member
NIPPON STEEL & SUMITOMO METAL CORP1 citations58
US9555496B2Jan 31, 2017
Process for producing welded joint using GMA welding and CO2 as a shielding gas
NIPPON STEEL & SUMITOMO METAL CORP1 citations49
SUMITOMO METAL IND
3 patentsUS6217676B1Apr 17, 2001
Steel for oil well pipe with high corrosion resistance to wet carbon dioxide and seawater, and a seamless oil well pipe
SUMITOMO METAL IND52 citations95
US5938865AAug 17, 1999
Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance
SUMITOMO METAL IND66 citations94
US7799149B2Sep 21, 2010
Oil country tubular good for expansion in well and manufacturing method thereof
SUMITOMO METAL IND0 citations49