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:
Jan. 30, 1979
Filed:
Feb. 14, 1977
Applicant:
Inventors:
Assignee:
Sumitomo Metal Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148 36 ; 7512 / ; 7512 / ; 7512 / ; 75124 ; 148 / ;
Abstract
A high strength steel plate of improved low temperature toughness useful for making an arctic grade line pipe is provided with the addition of 0.8 - 2.0% by weight of Ni and 0.0005 - 0.0040% by weight of Ca, which may be used in the as-rolled state and manufactured through two step controlled rolling the secondary step rolling of which is carried out at a temperature lower than a conventional rolling temperature.
Nashiwa, Hajime. (1979). As-rolled steel plate having improved low temperature toughness and (U.S. Patent No. 4137104). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4137104
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile