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:
Feb. 13, 1990
Filed:
Jul. 28, 1987
Applicant:
Inventor:
Albert Fabre, Venissieux, FR;
Assignee:
Rhone-Poulenc Recherches, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D02G / ;
U.S. Cl.
CPC ...
428398 ; 21050023 ; 210506 ; 428376 ; 55 16 ; 55 68 ;
Abstract
Selectively permeable, hollow composite fibers, well adapted for the dehumidification of air or carbon dioxide, are comprised of (a) an asymmetric, hollow, polymeric base fiber including both dense and porous component layers, and (b) a polymer layer coated onto the dense layer of said asymmetric hollow base fiber.