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. 16, 2012
Filed:
Dec. 25, 2008
Applicants:
Shoichi Miyawaki, Tokyo, JP;
Shiho Katsukawa, Tokyo, JP;
Hiroshi Abe, Tokyo, JP;
Yuko Iijima, Tokyo, JP;
Akira Isogai, Tokyo, JP;
Inventors:
Shoichi Miyawaki, Tokyo, JP;
Shiho Katsukawa, Tokyo, JP;
Hiroshi Abe, Tokyo, JP;
Yuko Iijima, Tokyo, JP;
Akira Isogai, Tokyo, JP;
Assignee:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 13/02 (2006.01); C08B 1/00 (2006.01); C08B 15/04 (2006.01); B82B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Cellulose nanofibers are produced using a 4-hydroxy TEMPO derivative by treating a cellulosic material with an oxidizing agent in water in the presence of a cellulose oxidation catalyst containing an N-oxyl compound to prepare oxidized cellulos, and microfibrillating the oxidized cellulose.