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. 07, 2025
Filed:
Mar. 09, 2021
Applicant:
Infinited Fiber Company Oy, Espoo, FI;
Inventors:
Assignee:
Infinited Fiber Company, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 15/06 (2006.01); C08B 16/00 (2006.01); D01F 2/02 (2006.01); D21C 5/00 (2006.01); D21C 9/00 (2006.01);
U.S. Cl.
CPC ...
C08B 15/06 (2013.01); C08B 16/00 (2013.01); D01F 2/02 (2013.01); D21C 5/00 (2013.01); D21C 9/002 (2013.01);
Abstract
According to an example aspect of the present invention, there is provided a method of separating cellulosic fibres and non-cellulosic fibres from a mixed fibre textile material comprising cellulosic and non-cellulosic fibres. The method comprises mechanically disintegrating the textile material to open textile structures in the material, contacting the mechanically opened structures with an acid in a first chemical step, and contacting the mechanically opened structures with an alkaline in a second chemical step.