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. 10, 2019
Filed:
May. 27, 2015
Applicant:
Koppers Performance Chemicals Inc., Pittsburgh, PA (US);
Inventors:
Jun Zhang, Peachtree City, GA (US);
John Horton, Peachtree City, GA (US);
Xinhao H. Gao, Peachtree City, GA (US);
Assignee:
Koppers Performance Chemicals Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27K 3/16 (2006.01); B05D 7/06 (2006.01); B05D 1/02 (2006.01); B05D 1/18 (2006.01); B05D 1/28 (2006.01); B27K 3/36 (2006.01); B27K 3/08 (2006.01); B27K 5/00 (2006.01); B05D 5/00 (2006.01); B05D 3/04 (2006.01); B05D 7/00 (2006.01); B05D 7/08 (2006.01); C09K 21/04 (2006.01); C09K 21/02 (2006.01); C09K 21/10 (2006.01); C09D 5/18 (2006.01);
U.S. Cl.
CPC ...
B27K 3/163 (2013.01); B05D 1/02 (2013.01); B05D 1/18 (2013.01); B05D 1/28 (2013.01); B05D 3/0493 (2013.01); B05D 5/00 (2013.01); B05D 7/06 (2013.01); B05D 7/50 (2013.01); B27K 3/08 (2013.01); B27K 3/166 (2013.01); B27K 3/36 (2013.01); B27K 5/003 (2013.01); B27K 5/0055 (2013.01); C09D 5/185 (2013.01); C09K 21/02 (2013.01); C09K 21/04 (2013.01); C09K 21/10 (2013.01); B05D 7/08 (2013.01); B05D 2203/20 (2013.01); B05D 2401/20 (2013.01); B05D 2502/00 (2013.01); B05D 2503/00 (2013.01); B05D 2504/00 (2013.01); B05D 2505/00 (2013.01); B05D 2508/00 (2013.01); B27K 2200/15 (2013.01); B27K 2200/30 (2013.01); B27K 2240/30 (2013.01); Y10T 428/266 (2015.01);
Abstract
A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.