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:
Jul. 24, 1990
Filed:
May. 23, 1988
Applicant:
Inventors:
Diederich Schilo, Klingenberg-Rollfeld, DE;
Willi Birkenfeld, Obernburg, DE;
Assignee:
Akzo N.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
428373 ; 428364 ; 428374 ; 428224 ;
Abstract
Melt-spun polyether imide fibers are disclosed wherein the granules are brought to a moisture content of below 0.05%, the melt is extruded from nozzles at a temperature between 300.degree. and 440.degree. C., and the spun fibers are taken up at a speed of up to 2,500 m/min. Fibers produced in this fashion can be stretched up to 1:3 and spin-dyed.