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:
Sep. 06, 2011
Filed:
Apr. 23, 2007
Shisei Goto, Tokyo, JP;
Takaharu Noda, Tokyo, JP;
Chie Yuzawa, Tokyo, JP;
Takeshi Iimori, Tokyo, JP;
Shisei Goto, Tokyo, JP;
Takaharu Noda, Tokyo, JP;
Chie Yuzawa, Tokyo, JP;
Takeshi Iimori, Tokyo, JP;
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Abstract
The present invention aims to provide cellulose-based fibrous materials for obtaining papers and sheets having low density, high surface quality, good size stability despite of high strength, and high opacity. Cellulose-based fibrous materials having external fibrils consisting of an assembly of scale-like microfibrils exhibit a higher fiber stiffness, a lower water retention value and a higher specific surface area as compared with fibrous materials having filamentous external fibrils at the same freeness. Papers and sheets having low density, high surface quality, good size stability and high opacity can be obtained by using such fibrous materials.