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:
Aug. 21, 2012
Filed:
Oct. 21, 2010
Applicants:
Jamal Aalaie Haradasht, Tehran, IR;
Ebrahim Vasheghani Farahani, Tehran, IR;
Ali Rahmatpour, Tehran, IR;
Inventors:
Jamal Aalaie Haradasht, Tehran, IR;
Ebrahim Vasheghani Farahani, Tehran, IR;
Ali Rahmatpour, Tehran, IR;
Assignee:
RIPI, Tehran, IR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B 67/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a salt resistant water absorbing compound including a polymeric phase that includes polyacrylamide and at least one of di or poly saccharide, wherein the polyacrylamide is cross-linked in the presence of at least one of di or poly saccharide by a cross-linking agent including multivalent cations, complexes thereof, organic cross-linking agents, or any combination thereof.