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. 18, 2021
Filed:
May. 14, 2018
The Sherwin-williams Company, Cleveland, OH (US);
David G. Comley, Stoney Creek, CA;
Oscar A. Ojero, Hamilton, CA;
Ronald E. McMahon, Avon Lake, OH (US);
THE SERWIN-WILLIAMS COMPANY, Cleveland, OH (US);
Abstract
A method for the application of at least two different powder coating layers to a substrate comprising the steps of application of a first powder coating layer followed by the application of a second powder coating layer, without any substantial curing of the first powder coating layer prior to the application of the second powder coating layer, followed by the simultaneous curing at a temperature and time period sufficient to substantially cure the first powder coating layer and the second powder coating layer, wherein the first powder coating layer and the second powder coating layer each comprise at least one resin independently having at least one functional group in stoichiometric ratios sufficient to react or crosslink with the other layer at the interface of the two or more layers.