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:
Jan. 08, 1991
Filed:
Jun. 07, 1988
Applicant:
Inventor:
Theodore G Karageorgiou, Arden, NC (US);
Assignee:
BASF Corporation, Williamsburg, VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
428224 ; 57243 ; 428364 ; 428373 ;
Abstract
A polyamide filament having improved properties such as increased tenacity and dyeability. The filament has a birefringence of at least 0.040 and an .alpha.-crystal content of at least 30%. The filament is prepared by contacting the filament with water after the filament has been cooled to a temperature below its stick point but above its glass transition temperature. The water can be applied intermittently to the filament to produce a resulting filament having variable dyeing characteristics.
Karageorgiou, Theodore. (1991). Polyamide filaments having improved properties and method of preparation (U.S. Patent No. 4983448). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4983448
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