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:
Oct. 30, 1984
Filed:
Oct. 28, 1982
Applicant:
Inventor:
Larry W Becker, Syracuse, NY (US);
Assignee:
Betz Laboratories, Inc., Trevose, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210699 ; 252180 ;
Abstract
A method of controlling deposition of scale and the like in waters having a high calcium ion content is disclosed. The method is applicable to waters having a calcium ion concentration of about 300 ppm Ca.sup.+2 and comprises adding 1-hydroxypropylidene-1,1 diphosphonic acid or water soluble salt thereto. This particular compound is capable of performing the deposit control function in such high calcium waters without itself resulting in substantial deposit control agent-calcium adduct formation which would deleteriously affect the deposit control function.