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. 19, 2025
Filed:
Nov. 26, 2020
Lenzing Aktiengesellschaft, Lenzing, AT;
Johann Pillichshammer, Frankenmarkt, AT;
Christoph Schrempf, Bad Schallerbach, AT;
Andreas Gressenbauer, Schörfling am Attersee, AT;
Ernst Reiter, Schörfling, AT;
Martin Neunteufel, Lantau Island, CN;
Lenzing Aktiengesellschaft, Lenzing, AT;
Abstract
A process and a system for washing filaments. A filament to be washed and a washing liquid are passed in a countercurrent. The process and the system include two washing stages. In each washing stage the filament is brought into contact with a fresh washing liquid by a washing element in such a way that only an amount of the washing liquid is transferred to the filament, which adheres to the filament itself, for example by adhesion. The washing liquid is then separated from the filament again in each washing stage, and a separated washing liquid is collected in such a way that it is not mixed with the separated washing liquid from other washing stages of the process but is used as the fresh washing liquid in the washing element of a preceding washing stage.