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:
Mar. 10, 2015
Filed:
Nov. 12, 2010
Applicants:
Hiroyuki Yano, Uji, JP;
Tadafumi Hashimoto, Uji, JP;
Akihiro Sato, Kyoto, JP;
Inventors:
Assignees:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Oji Holdings Corporation, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Kyoto University, Kyoto-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C 3/22 (2006.01); D21D 1/34 (2006.01); D21H 11/18 (2006.01);
U.S. Cl.
CPC ...
D21D 1/34 (2013.01); D21H 11/18 (2013.01);
Abstract
The present invention provides a novel production method of a cellulose nanofiber and a novel cellulose nanofiber. The method for producing a cellulose nanofiber comprises defibrating pulp by a single- or multi-screw kneader in the presence of water, the single or multi-screw kneader having a screw circumferential speed of 45 m/min. Or more.