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:
Dec. 17, 2002
Filed:
Oct. 23, 2000
Applicant:
Inventor:
Martin Leonard Heijnen, Camberley, GB;
Assignee:
Kalsep Limited, Surrey, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 7/168 ; B01D 7/156 ;
U.S. Cl.
CPC ...
B01D 7/168 ; B01D 7/156 ;
Abstract
A membrane which can be used in membrane filtration processes and which has a reduced tendency to fouling is a polysulphone or a plyether sulphone and a polyethylene oxide/polypropylene oxide substituted diamine and can be made by a phase inversion process in the presence of pore modifying agents such as an alcohol, glycerol or glycol to give a membrane which has a pore size of 0.1&mgr; to 1 micron and is hydrophilic.