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:
Jan. 25, 1994
Filed:
Jul. 13, 1992
Applicant:
Inventors:
Kechia J Chou, Wappingers Falls, NY (US);
Kathleen M Hellmuth, Hopewell Junction, NY (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210654 ; 21050037 ; 21050043 ;
Abstract
Membrane separation process is improved by use, as a support membrane, of (i) a polyacrylonitrile membrane on which at least a portion of the surface --CN groups have been hydrolyzed to --COOH groups or (ii) a membrane formed of polyacrylonitrile and polyacrylic acid.
Chou, Kechia. (1994). Membrane separation process (U.S. Patent No. 5281337). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5281337
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile