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. 28, 2001
Filed:
Apr. 20, 2000
Applicant:
Inventors:
Mariëtte Ellen Boukje Bolkenbaas, Oosterland, NL;
Hendrika Cornelia Kuzee, Oost-Souburg, NL;
Henricus Wilhelmus Carolina Raaijmakers, Roosendaal, NL;
Assignee:
Cooperatie Cosun U.A., Roosendaal, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/62 ;
U.S. Cl.
CPC ...
C02F 1/62 ;
Abstract
Heavy metals including lead, copper, zinc, and cadmium, are effectively extracted from sludge mixtures by treatment of the mixture with carboxyl derivatives of fructans, having a degree of substitution of 0.2-3.0.