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:
Dec. 22, 1992
Filed:
Mar. 08, 1991
Applicant:
Inventor:
Hung H Yang, Richmond, VA (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
264184 ; 26421116 ; 264233 ;
Abstract
A process for spinning para-aramid fibers of increased tenacity and elongation at break by using an air-gap means with a spinneret capillary of less than 2.5 mils diameter, a coagulation bath temperature of less than 10C, and tension on the fibers during washing and drying of more than 0.05 and less than 0.35 gpd.