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. 07, 1978
Filed:
Dec. 12, 1975
Jan Willem van Heuven, Apeldoorn, NL;
Roelof Karl Bloebaum, Vaassen, NL;
Abstract
A composite dynamically formed membrane is described comprising an intermate layer between a solid porous supporting material and the layer of forming particles. In forming the composite dynamic membrane an intermediate layer of inert material which is either granular or fibrous, is deposited on a substantially tubular porous supporting device and on this there is deposited a second layer of an inert material, the ratio of the particle diameters between the second and the first layer being between 1:10 and 1:1,000. The fine particles for this second layer may be blended with the particles of membrane forming material. Dynamic membranes are employed in reverse osmosis, which more in particular is widely used for the desalination of aqueous liquids.