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. 27, 1992
Filed:
Mar. 12, 1991
Applicant:
Inventors:
Roger D Moulton, The Woodlands, TX (US);
Alexander C McDonald, Kemah, TX (US);
James L Soos, Conroe, TX (US);
Assignee:
Betz Laboratories, Inc., Trevose, US;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210698 ; 134 2219 ; 210701 ; 252 82 ; 252180 ; 422 16 ;
Abstract
This invention relates to a method of transporting and inhibiting the deposition of copper and copper-iron materials on heat transfer devices in steam generating systems. This method utilizes a thermally stable chelant and a carboxylated polymeric dispersant as the treatment agents. Representative chemicals are 1,10-phenanthroline and 9:1 methacrylic acid/acrylic acid copolymer.