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. 18, 1994
Filed:
Dec. 26, 1991
Applicant:
Inventors:
Thomas H Jeffers, Salt Lake City, UT (US);
Don C Seidel, Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C12N / ; C12N / ; B01J / ;
U.S. Cl.
CPC ...
210688 ; 210681 ; 4272133 ; 435179 ; 435182 ; 4352625 ; 435803 ;
Abstract
Polymer beads are prepared containing an immobilized extractant for sorbing metal contaminants at concentrations of less than 1 mg/L in dilute aqueous solutions. A preferred polymer is polysulfone and the extractant can be a biomass material or a synthetic chemical compound sorbed into activated carbon. The polymer beads are prepared by dissolving the polymer in an organic solvent to form a solution, adding the extractant to the solution to form a mixture and injecting the mixture through a nozzle into water to form the beads.