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:
May. 15, 1990
Filed:
Jun. 18, 1987
Colette Bardot, Villeurbanne, FR;
Pierre Bergez, Paris, FR;
Charles Eyraud, Lyons, FR;
Lahcen Ilahiane, Lyons, FR;
Commissariat A L'Energie Atomique, Paris, FR;
Abstract
An ultrafiltration, hyperfiltration or demineralization element comprises a porous inorganic material support and an asymmetrical, cellular, microporous organic polymer membrane, produced on one of the faces of the porous support and fitted into the pores of the porous support flush with said surface and without projecting beyond the same. The element is prepared by coating the inner surface of a tubular porous support with a coating solution of the organic polymer and then subjecting the coated support to a polymer insolubilization stage, which can be carried out by partial evaporation, followed by the immersion of the coated support in a coagulating bath.