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, 1997
Filed:
Feb. 05, 1996
Applicant:
Inventors:
Assignee:
The Procter & Gamble Company, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
510191 ; 510116 ; 510238 ; 510247 ; 510372 ; 510373 ; 510427 ; 510433 ; 134-3 ; 134 42 ;
Abstract
Compositions for the removal of limescale comprise aryl sulfonic acids, optionally, acid stable bleach compositions, and, optionally, sulfamic acid. The compositions are used in a process for removing limescale as aqueous compositions. The pH of the compositions is from about 0 to about 4. The compositions provide improved performance for equal reserve acidity.