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:
Mar. 03, 2009
Filed:
Mar. 31, 2005
Yatao HU, Malvern, PA (US);
Jason D. Lenox, Boyertown, PA (US);
Neil T. Miller, King of Prussia, PA (US);
David M. Schubert, Lone Tree, CO (US);
Yatao Hu, Malvern, PA (US);
Jason D. Lenox, Boyertown, PA (US);
Neil T. Miller, King of Prussia, PA (US);
David M. Schubert, Lone Tree, CO (US);
PQ Corporation, Berwyn, PA (US);
U.S. Borax Inc., Greenwood Village, CO (US);
Abstract
Systems and methods are provided for treating products containing wood fibers to provide protection against wood destroying organisms and fire, and resistance against leaching of the preservative from the wood by water in exposed environments such as exterior applications. The methods involve applying to a substrate a first aqueous composition containing a boron compound, a source of zinc, and ammonia, followed by application of a second aqueous composition containing an alkali metal silicate. The compositions may be applied by vacuum and/or pressure treatment or dip treatment under atmospheric pressure.