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:
Sep. 15, 1981
Filed:
Aug. 19, 1977
Applicant:
Inventors:
John H Bucher, Bethel Park, PA (US);
John F Butler, Bethel Park, PA (US);
John F Held, Verona, PA (US);
Assignee:
Jones & Laughlin Steel Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148 / ; 148 / ; 148 36 ;
Abstract
High strength, cold finished steel bars strengthened through the addition of from 0.05% to 0.15% vanadium and 0.001% to 0.025% nitrogen are produced by a series of steps involving hot rolling, cold drawing, and heat-treatment.