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:
Sep. 21, 1999
Filed:
Jan. 31, 1997
Takeshi Matsuura, Ottawa, CA;
Paul Santerre, Toronto, CA;
Roberto Martin Narbaitz, Ottawa, CA;
Vu Anh Pham, Ottawa, CA;
Yi Fang, Ottawa, CA;
Hassam Mahmud, Ottawa, CA;
Fakhir Baig, Mississauga, CA;
University of Ottawa, Ottawa, CA;
Fielding Chemicals Limited, Mississauga, CA;
Abstract
The present invention relates to membranes useful in the separation of water from a solution containing volatile organic compounds and water. The membranes may be used in dehydrating an organic/water mixture to purify an organic when an organic is of interest or, alternatively, producing pure water from an organic/water mixture when clean water is of interest. The membranes include a hydrophilic base polymer, an optional pore-forming polymer and a surface modifying macromolecule (SMM) which imparts surface hydrophobicity to the membrane.