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:
Oct. 29, 2024
Filed:
Dec. 20, 2019
Applicant:
Lenzing Aktiengesellschaft, Lenzing, AT;
Inventors:
Christoph Schrempf, Bad Schallerbach, AT;
Johann Pillichshammer, Frankenmarkt, AT;
Andreas Gressenbauer, Schorfling am Attersee, AT;
Ernst Reiter, Schorfling am Attersee, AT;
Martin Neunteufel, Lantau Island, N.T., CN;
Assignee:
Lenzing Aktiengesellschaft, Lenzing, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D 4/02 (2006.01); D01D 10/02 (2006.01); D01F 2/00 (2006.01); D01F 2/06 (2006.01);
U.S. Cl.
CPC ...
D01D 4/02 (2013.01); D01D 10/02 (2013.01); D01F 2/06 (2013.01); D01F 2/00 (2013.01);
Abstract
A method of producing lyocell filaments employs a steam heatable spinneret having a rectangular shape with an aspect ratio of more than 2 and comprising at least a top housing and a nozzle frame. The spinneret is heated and used for spinning cellulosic filaments from a cellulose solution in a solvent. A lyocell process employs the spinneret.