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:
Mar. 14, 1978
Filed:
Oct. 29, 1975
Applicant:
Inventors:
Hiroyo Haga, Tokyo, JA;
Tovoaki Bada, Machida, JA;
Sigeo Fujimori, Isehara, JA;
Tuguro Kikuno, Sagamihara, JA;
Hiroshi Nozaki, Omiya, JA;
Assignee:
Nippon Steel Corporation, Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219107 ; 148127 ; 2191 / ;
Abstract
A method of preventing brittle fracture of a pipe structure constructed by welding welded or continuous welded steel pipes, which comprise subjecting a certain length of the seamed portion adjacent to the butt welded portion of the steel pipe to an arc treatment.
Haga, Hiroyo. (1978). Method for preventing brittle fracture of steel pipe structures (U.S. Patent No. 4079224). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4079224
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile