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:
Dec. 27, 1983
Filed:
Nov. 12, 1982
Thomas J Dearlove, Troy, MI (US);
Richard K Gray, Warren, MI (US);
Richard P Atkins, Rochester, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A method and composition have been developed for providing wear resistant surfaces on tools used to stamp sheet metal. The composition is based on liquid epoxy novolac resin having a functionality greater than two filled with an inorganic powder having very high hardness. The epoxy constituent is cross linked and cured in two stages: it is first cured at room temperature with an aliphatic amine curing agent until it is hardened and is then toughened by an elevated temperature cure initiated by an imidazole curing agent. The composition may be used to cast an entire tool or as a surface coating layer for a less durable base.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile