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:
Dec. 19, 2017
Filed:
Sep. 23, 2014
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
Altony J. Miralles, Woodbury, MN (US);
Carter M. Silvernail, Burnsville, MN (US);
Assignee:
Ecolab USA Inc., Saint Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D 3/36 (2006.01); C02F 5/14 (2006.01); C11D 3/04 (2006.01); C11D 3/10 (2006.01); C11D 3/37 (2006.01);
U.S. Cl.
CPC ...
C11D 3/365 (2013.01); C02F 5/14 (2013.01); C11D 3/044 (2013.01); C11D 3/10 (2013.01); C11D 3/3757 (2013.01);
Abstract
A water hardness controlling agent includes a polyacrylic acid or salt thereof having a molecular weight of between about 1,000 and about 50,000 g/mol, an acrylic-maleic acid copolymer or salt thereof having a molecular weight of between about 1,000 and about 100,000 g/mol and a phosphonocarboxylic acid or salt thereof. A ratio of acrylic-maleic acid copolymer or salt thereof to polyacrylic acid or salt thereof to phosphonocarboxylic acid or salt thereof in parts per million is about 1-30:10-80:6-20.