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. 12, 1984
Filed:
Oct. 14, 1982
Applicant:
Inventors:
John J Buckfelder, Wilmington, DE (US);
Henry M Schleinitz, Kennett Square, PA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B29C / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
427246 ; 210490 ; 2105002 ; 264 41 ; 264 464 ; 264 49 ;
Abstract
Preparation of supported reverse osmosis membranes on a woven, unsized, porous support using dimethylacetamide solvent and a lithium nitrate or chloride or magnesium chloride salt.