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:
May. 30, 1989
Filed:
Nov. 24, 1987
Applicant:
Inventor:
Wayne S Stanko, Asheville, NC (US);
Assignee:
BASF Corporation, Williamsburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
428364 ; 2642102 ; 2642107 ; 2642108 ; 264230 ; 428373 ;
Abstract
A yarn comprising polyester fibers having an improved combination of properties including darker dyeing capability, good thermal dimensional stability, and good light stability and dye lightfastness can be prepared by drawing and annealing a feeder yarn having a birefringence (.DELTA.n) of at least 0.0175 at carefully controlled temperatures and draw ratios.