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:
Jan. 07, 2003
Filed:
Dec. 15, 2000
Applicant:
Inventors:
Pavol Kmec, Hamburg, NJ (US);
Dwight E. Emerich, Lincoln Park, NJ (US);
Assignee:
Ashland Inc., Dublin, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F 5/12 ;
U.S. Cl.
CPC ...
C02F 5/12 ;
Abstract
This invention relates to phosphate stabilizing compositions comprising (a) polyaspartic acid, and (b) an anionic carboxylic polymer. The compositions effectively stabilize phosphates by inhibiting the formation of calcium phosphate scale. The invention also relates to a process for inhibiting calcium phosphate scale in water treatment systems.