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:
Feb. 17, 1987
Filed:
May. 16, 1986
Applicant:
Inventors:
Robert M Knudson, Coquitlam, CA;
Hubert Ehrenfellner, Surrey, CA;
Assignee:
MacMillan Bloedel Limited, Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27N / ;
U.S. Cl.
CPC ...
264109 ; 264128 ; 428326 ; 428485 ; 428528 ; 428529 ; 428689 ; 428907 ;
Abstract
A composite wood product, such as waferboard, is treated during manufacture with preservative chemicals to improve resistance to decay and insect organisms. The process avoids having to treat a finished product and is not limited to only surface protection. Molten slack wax is first applied to wood particles having a moisture content not greater than about 10%, the wax coated wood particles are then sprayed with an ammoniacal copper arsenate solution having a concentration of at least about 11% followed by blending with adhesive resin and forming a composite wood product.