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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 11760811 B1

PDFFull Text
Date of Patent:
Sep. 19, 2023

Filed:

Dec. 05, 2018

Carboxymethylated cellulose

Applicant:

Nippon Paper Industries Co., Ltd., Tokyo, JP;

Inventors:

Kazuhiko Inoue, Tokyo, JP;

Takeshi Nakatani, Tokyo, JP;

Yusuke Tada, Tokyo, JP;

Kasumi Nishigaya, Tokyo, JP;

Hiroyoshi Suzuki, Tokyo, JP;

Assignee:

NIPPON PAPER INDUSTRIES CO., LTD., Tokyo, JP;

Attorneys:

McCarter & English, LLP

Wei Song

Thomas F. Foley

Primary Examiner:

Leigh C Maier

Assistant Examiner:

Everett White

Int. Cl.
CPC ...
C08B 11/12 (2006.01);
U.S. Cl.
CPC ...
C08B 11/12 (2013.01);
Abstract

A carboxymethylated cellulose having a carboxymethyl substitution of no more than 0.50 and a cellulose I type crystallization of at least 50%. Ideally, the anionization is 0.00-1.00 meq/g. The Schopper-Riegler freeness is ideally at least 60.0° SR. Ideally the ratio of filtration residue is 0%-30% by mass. The viscosity (30 rpm, 25° C.) for an aqueous dispersion having a 1% solid content (w/v) is ideally no more than 10.0 mPa·s.

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Inoue, Kazuhiko. (2023). Carboxymethylated cellulose (U.S. Patent No. 11760811). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11760811

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