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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.:

US 10808356 B1

PDFFull Text
Date of Patent:
Oct. 20, 2020

Filed:

May. 13, 2014

Method and a device for producing nanofibrillar cellulose

Applicant:

Upm-kymmene Corporation, Helsinki, FI;

Inventors:

Markus Nuopponen, Helsinki, FI;

Juha Tamper, Taipalsaari, FI;

Taisto Tienvieri, Vantaa, FI;

Assignee:

UPM-KYMMENE CORPORATION, Helsinki, FI;

Attorney:

Nixon Peabody LLP

Primary Examiner:

Anthony Calandra

Int. Cl.
CPC ...
D21C 9/00 (2006.01); D21H 11/18 (2006.01); D21D 1/00 (2006.01); D21D 1/20 (2006.01); C08B 15/08 (2006.01); D21H 21/18 (2006.01); D21H 17/25 (2006.01);
U.S. Cl.
CPC ...
D21C 9/007 (2013.01); C08B 15/08 (2013.01); D21D 1/004 (2013.01); D21D 1/006 (2013.01); D21D 1/20 (2013.01); D21H 11/18 (2013.01); D21H 17/25 (2013.01); D21H 21/18 (2013.01);
Abstract

In a method for producing nanofibrillar cellulose, cellulose based fiber material in dispersion is processed for separating fibrils. The method includes a first step where the fiber material is supplied to a disperser, where it flows through several counter-rotating rotors in such a way that the material is repeatedly subjected to shear and impact forces by the effect of the different counter-rotating rotors, and a second step, where the fiber material obtained from the first step is supplied to a homogenizer, where it is subjected to homogenization by the effect of pressure.

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Nuopponen, Markus. (2020). Method and a device for producing nanofibrillar cellulose (U.S. Patent No. 10808356). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10808356

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