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:
Nov. 11, 2003
Filed:
Dec. 28, 2000
John Richardson, Ashland, VA (US);
Michael G. Trulear, Richmond, VA (US);
Richard H. Tribble, Richmond, VA (US);
Chemtreat, Inc., Glen Allen, VA (US);
Abstract
A composition and an improved method for treating aqueous systems to prevent the accumulation of mineral scale and corrosion which comprises adding to the aqueous system a treatment solution comprising 2 phosphonobutane 1,2,4 tricarboxylic acid and a quad-polymer that includes four discrete monomers (specifically allyloxybenzenesulfonic acid, methallyl sulfonic acid, a copolymerizable non-ionic monomer and an olefinically unsaturated carboxylic acid monomer). The composition and method allow the use of higher cycles of concentration, including aqueous systems having calcite saturation indices (CSI) of more than 200, while inhibiting the formation of calcium carbonate, calcium phosphate, magnesium silicate, and iron scales.