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. 16, 1992
Filed:
Feb. 08, 1991
Applicant:
Inventors:
Casper J Rekers, Hardenberg, NL;
Gerrit J Snijders, Gorredijk, NL;
Arie Zwijnenburg, Oldekerk, NL;
Dirk C Weyenberg, Drachten, NL;
Assignee:
Stork Friesland B. V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21050027 ; 21050041 ; 264 41 ; 521 50 ;
Abstract
A membrane for membrane filtration is disclosed, comprising a polymer matrix formed by coagulation with a liquid coagulant from a casting syrup, which polymer matrix is linked to hydrophilic groups belonging to a compound which has a hydrophilic chain section, is not coagulated by the liquid coagulant, is coupled on either side to a hydrophobic chain, is anchored in the polymer matrix by non-chemical bonding, and is composed of a compound which has a molecular weight of at least 2000 and can be used as a thickening agent.