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:
May. 02, 1989
Filed:
Dec. 11, 1987
Applicant:
Inventor:
Vincent R Coleman, Aurora, OH (US);
Assignee:
Van Dorn Company, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
266115 ; 266117 ; 266259 ;
Abstract
A method and apparatus for heat treating steel plates subject to longitudinal length distortion wherein the plate at a temperature of the critical temperature of the steel passes through leveling rolls to remove the length distortion and immediately thereafter through quenching rolls which maintain length uniformity during quenching of the plate.
Coleman, Vincent. (1989). Apparatus for heat treating steel plates (U.S. Patent No. 4826138). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4826138
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile