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:
Jun. 24, 2014
Filed:
Mar. 16, 2010
Applicant:
Sheldon Phillip Verrett, Rock Hill, MO (US);
Inventor:
Sheldon Phillip Verrett, Rock Hill, MO (US);
Assignee:
Dequest AG, Zug, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21C 3/02 (2006.01); D21C 3/22 (2006.01); D21C 11/10 (2006.01); C02F 5/10 (2006.01); C02F 5/14 (2006.01); D21C 9/00 (2006.01); C02F 103/28 (2006.01);
U.S. Cl.
CPC ...
D21C 3/226 (2013.01); D21C 11/106 (2013.01); D21C 9/008 (2013.01); C02F 2103/28 (2013.01); C02F 5/14 (2013.01); Y10S 210/928 (2013.01);
Abstract
A method for inhibiting the formation, deposition and adherence of calcium salt scale to metallic and other surfaces in the equipment, vessels and/or piping of a chemical pulp process facility comprising adding an effective scale inhibiting amount of a composition to the alkaline aqueous mixture in the digester of said chemical pulping process. Said composition consists of at least one phosphonate component (I) and at least one component (II) consisting of at least one carboxylated fructan compound.