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:
Jun. 28, 1977
Filed:
Mar. 31, 1972
Fred Wayne Hoover, Wilmington, DE (US);
Robert Earl Roberts, Kennet Square, PA (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
An apparatus useful for the separation of the components of fluid mixtures by means of pressure and a permselective membrane, applicable to reverse osmosis, ultrafiltration, electrofiltration, and gaseous separation processes, comprises a shell, containing a porous body with multiple passages therethrough, with a selectively permeable membrane supported by at least a portion of the surfaces of the passages and a coating of either a semipermeable or a non-permeable material on all other surfaces except for areas left uncoated for egress of fluids from the porous body, means for passing a fluid mixture into contact with the surfaces of the body under pressure, and a conduit in fluid-tight relation to the membrane for removing fluids passing through the membrane from the porous body. Such an apparatus can be operated at high pressure because of the compressive stress exerted on the porous body when the shell is pressurized, and permits for advantageous ratios of membrane surface area to body volume.