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. 27, 2007
Filed:
Jan. 26, 2005
Jacob Owen Thompson, St. Louis, MO (US);
Sheldon Phillip Verrett, Olivette, MO (US);
Jeremy E. Loy, Vernon Hills, IL (US);
Steven John Severtson, Shoreview, MN (US);
Jacob Owen Thompson, St. Louis, MO (US);
Sheldon Phillip Verrett, Olivette, MO (US);
Jeremy E. Loy, Vernon Hills, IL (US);
Steven John Severtson, Shoreview, MN (US);
Thermophos Trading GmbH, Zug, CH;
Abstract
Compositions and method of improving inhibition of calcium salt scale formation under the conditions found in chemical pulp processes in which an effective amount of selected phosphonates or phosphonate blends is admixed with the black liquor composition recovered from the digester in a chemical pulping process. The compositions and method are especially well suited for use in the Kraft pulping process.