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. 10, 1999
Filed:
Dec. 08, 1997
Applicant:
Inventors:
O Richard Hughes, Chatham, NJ (US);
Dieter K Kurschus, Bayville, NJ (US);
John A Flint, Berkeley Heights, NJ (US);
Cheng K Saw, Summit, NJ (US);
Assignee:
HNA Holdings, Inc., Charlotte, NC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ;
U.S. Cl.
CPC ...
2642108 ; 528502 ; 528503 ; 2641761 ; 26417713 ; 26417717 ; 26417719 ; 2642101 ; 2642105 ; 264280 ; 264291 ;
Abstract
Fibers and yarns of polyethylene terephthalate (PET) and PET copolymers with a sheath/filamentous core microstructure are formed from unoriented and non crystalline 'as spun' source fibers and yarns by drawing to high draw ratios in one step. Fibers and yarns with the sheath/filamentous core microstructure are stiffer than commercial PET fibers. Fibers and yarns with the sheath/filamentous core microstructure may be annealed and relaxed to increase their dimensional stability without loss of the sheath/filamentous core microstructure.