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:
Aug. 02, 1977
Filed:
Jun. 25, 1975
Applicant:
Inventors:
Edward F Steigelmann, Park Forest, IL (US);
Robert D Hughes, Park Forest, IL (US);
Joseph Gabor, Whiting, IN (US);
Assignee:
Standard Oil Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 81155 ; 55 16 ; 2105 / ; 260 / ; 260 / ; 2608 / ; 2606 / ; 2641 / ; 264209 ; 428 35 ;
Abstract
Hollow membrane fibers are formed from a mixture of N-alkoxyalkyl polyamide, polyvinyl alcohol, di(lower alkyl) sulfoxide and water. The fibers are useful for separating chemicals, e.g., aliphatically-unsaturated hydrocarbons, from mixtures containing them.