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:
Nov. 17, 1992
Filed:
Apr. 05, 1991
Applicant:
Inventors:
Lloyd M Robeson, Macungie, PA (US);
Robert J Axelrod, Orefield, PA (US);
Jeffrey A Kuphal, Blandon, PA (US);
Timothy L Pickering, Emmaus, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D01F / ; D01G / ;
U.S. Cl.
CPC ...
264 28 ; 264 37 ; 264 85 ; 264140 ; 264143 ; 2642106 ; 2642108 ; 264211 ; 26421116 ; 264344 ; 264D / ;
Abstract
Ultra-fine polymeric fibers are produced from various polymeric materials by mixing with thermoplastic poly(vinyl alcohol) and extruding the mixture through a die followed by further orientation. The poly(vinyl alcohol) is extracted to yield liberated ultra-fine polymeric fibers. The polymer utilized can include post-consumer polymer waste.