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:
May. 19, 2026
Filed:
Dec. 04, 2023
Applicant:
Ecolab Usa Inc., Saint Paul, MN (US);
Inventors:
Carter M. Silvernail, Saint Paul, MN (US);
Erik C. Olson, Saint Paul, MN (US);
Assignee:
ECOLAB USA INC., Saint Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D 3/36 (2006.01); C11D 3/04 (2006.01); C11D 3/08 (2006.01); C11D 3/10 (2006.01); C11D 3/20 (2006.01);
U.S. Cl.
CPC ...
C11D 3/365 (2013.01); C11D 3/044 (2013.01); C11D 3/08 (2013.01); C11D 3/10 (2013.01); C11D 3/2082 (2013.01); C11D 2111/16 (2024.01); C11D 2111/18 (2024.01);
Abstract
Detergent compositions effective for controlling hard water scale accumulation are disclosed. Detergent compositions employing phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives with alkali metal carbonate and/or alkali metal hydroxide reduce hard water scale accumulation on treated surfaces at alkaline conditions between about pH of 9 and 12.5. Methods employing the detergent compositions and preventing hard water scale accumulation are also provided.