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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 8992728 B1

PDFFull Text
Expired
Date of Patent:
Mar. 31, 2015

Filed:

Nov. 26, 2008

Cellulose nanofiber, production method of same and cellulose nanofiber dispersion

Applicants:

Akira Isogai, Tokyo, JP;

Tsuguyuki Saito, Tokyo, JP;

Inventors:

Akira Isogai, Tokyo, JP;

Tsuguyuki Saito, Tokyo, JP;

Assignee:

The University of Tokyo, Tokyo, JP;

Attorney:

Hamilton, Brook, Smith & Reynolds, P.C.

Primary Examiner:

Richard Crispino

Assistant Examiner:

Eric Yaary

Int. Cl.
CPC ...
B23B 5/00 (2006.01); C12P 19/04 (2006.01); C08B 1/00 (2006.01); D21H 13/02 (2006.01); C08B 15/04 (2006.01); C08L 1/04 (2006.01); D21H 11/20 (2006.01); D21C 9/00 (2006.01); D21H 15/02 (2006.01);
U.S. Cl.
CPC ...
C08B 15/04 (2013.01); C08L 1/04 (2013.01); D21H 11/20 (2013.01); D21C 9/002 (2013.01); D21H 15/02 (2013.01); Y10S 977/706 (2013.01);
Abstract

The cellulose nanofiber production method of the present invention comprises an oxidation treatment step for oxidizing native cellulose in a neutral or acidic reaction solution containing an N-oxyl compound and an oxidizing agent that oxidizes aldehyde groups, and a dispersion step for dispersing the native cellulose in a medium following the oxidation treatment step. According to the production method of the present invention, a cellulose nanofiber is provided that has long fibers and demonstrates high strength.

Find Patent Forward Citations

Isogai, Akira. (2015). Cellulose nanofiber, production method of same and cellulose nanofiber dispersion (U.S. Patent No. 8992728). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8992728

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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