The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1983
Filed:
Jun. 01, 1982
Applicant:
Inventors:
Takeo Kudo, Suita, JP;
Yasutaka Okada, Nishinomiya, JP;
Taishi Moroishi, Kobe, JP;
Akio Ikeda, Hyogo, JP;
Hiroo Ohtani, Kobe, JP;
Kunihiko Yoshikawa, Suita, JP;
Assignee:
Sumitomo Metal Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
420443 ; 420451 ; 420452 ; 420453 ; 420454 ; 420585 ;
Abstract
An alloy useful for manufacturing high strength deep well casing, tubing and drill pipes for use in oil-well operations is disclosed. The alloy exhibits improved resistance to stress corrosion cracking in the H.sub.2 S--CO.sub.2 --Cl.sup.- environment, which comprises the following alloy composition:
Kudo, Takeo. (1983). Alloy for making high strength deep well casing and tubing having (U.S. Patent No. 4400209). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4400209
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile