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. 29, 1990
Filed:
Oct. 18, 1985
Applicant:
Inventors:
David M Findlay, deceased, late of Terrasse Vaudreuil, CA;
Neil G Richardson, St-Laurent, CA;
Assignee:
Domtar Inc., Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N / ;
U.S. Cl.
CPC ...
424638 ; 424630 ;
Abstract
The present invention relates to a method of preserving wood material and rendering said wood material resistant to biological deterioration, by impregnating a wood material with a composition comprising an aqueous ammoniacal solution of copper and quaternary ammonium compounds. The invention also embraces the product resulting therefrom.