Inventor
UEDA MASAKATSU
JP13 patents
⚠️ This page may combine multiple inventors who share the name “UEDA MASAKATSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO METAL IND
10 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
US6129999AOct 10, 2000
High-strength welded steel structures having excellent corrosion resistance
SUMITOMO METAL IND36 citations92
US5849111ADec 15, 1998
Duplex stainless steel
SUMITOMO METAL IND31 citations91
US6059175AMay 9, 2000
Method for joining metallic materials by diffusion bonding and joined structure thereby
SUMITOMO METAL IND24 citations89
US6024276AFeb 15, 2000
Method for bonding dual-phase stainless steel
SUMITOMO METAL IND38 citations89
US6159311ADec 12, 2000
Martensitic stainless steel pipe and method for manufacturing the same
SUMITOMO METAL IND13 citations73
US5383983AJan 24, 1995
Martensitic stainless steel suitable for use in oil wells
SUMITOMO METAL IND19 citations73
US5879619AMar 9, 1999
Hydrogen sulfide corrosion resistant high-Cr and high-Ni alloys
SUMITOMO METAL IND4 citations62
US5660211AAug 26, 1997
Galvanic corrosion resistant insulating pipe having excellent film adhesion
SUMITOMO METAL IND6 citations61
US7799149B2Sep 21, 2010
Oil country tubular good for expansion in well and manufacturing method thereof
SUMITOMO METAL IND0 citations49