Inventor
OHTANI HIROO
8 patents
Patents
8 patentsUS4421571ADec 20, 1983
Process for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
SUMITOMO METAL IND59 citations95
US4400211AAug 23, 1983
Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
SUMITOMO METAL IND69 citations95
US4400209AAug 23, 1983
Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
SUMITOMO METAL IND49 citations92
US4400210AAug 23, 1983
Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
SUMITOMO METAL IND49 citations92
US4400349AAug 23, 1983
Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking
SUMITOMO METAL IND45 citations92
US4394187AJul 19, 1983
Method of making steels which are useful in fabricating pressure vessels
SUMITOMO METAL IND14 citations73
US4375377AMar 1, 1983
Steels which are useful in fabricating pressure vessels
SUMITOMO METAL IND9 citations73
US4344801AAug 17, 1982
Heavy thick high-strength casting having improved weldability and impact properties
SUMITOMO METAL IND1 citations48