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. 11, 1994
Filed:
Jan. 19, 1993
Applicant:
Inventors:
William M Hann, Gwynedd, PA (US);
Judy H Bardsley, Salford, PA (US);
Susan T Robertson, Ambler, PA (US);
Jan E Shulman, Newtown, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210696 ; 606412 ; 127 61 ; 1662441 ; 210698 ; 210701 ; 252175 ; 252180 ; 252181 ;
Abstract
A method for inhibiting silica scale formation in aqueous systems using selected low molecular weight (meth)acrylic or maleic acid based copolymers or terpolymers, magnesium ion alone, or the selected copolymers and terpolymers with aluminum ion or magnesium ion, or polyacrylic or polymaleic acid with aluminum ion or magnesium ion.