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:
Mar. 02, 1993
Filed:
Jul. 17, 1991
Jean-Michel Bauer, Pagny S/Moselle, FR;
Le Carbone Lorraine, Courbevoie, FR;
Abstract
Disclosed is a process for producing a mineral membrane on a mineral support, involving the production of a dispersion of a filler and a resin, depositing this dispersion onto a support so as to form a layer, followed by the thermal treatment of the support covered with the layer, to obtain an asymmetric thin membrane. A fluid dispersion is prepared of a filler, a water-soluble solvent and a resin insoluble in water but soluble in the organic solvent, and, after coking, to a coke content higher than 20% by weight, it is deposited onto the mineral support, all or some of the solvent is displaced in order to precipitate the resin, and the resin and, if appropriate, the support are coked.