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 8728272 B1

PDF
Full Text
Expired
Date of Patent:
May. 20, 2014

Filed:

Jul. 13, 2007
Applicants:

Hiroyuki Yano, Uji, JP;

Antonio Norio Nakagaito, Uji, JP;

Inventors:
Assignee:

Kyoto University, Kyoto-shi, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/52 (2006.01); D21H 17/33 (2006.01);
U.S. Cl.
CPC ...
Abstract

Although a microfibrillated cellulose has been conventionally added to a resin molded article for the purpose of improving the properties of resin such as strength, it is only possible to achieve the same level of strength as that of the resin itself. The object is to provide a resin molded article of greater strength. A molded article can be produced by blending resin with a microfibrillated cellulose having a type-II crystalline structure produced by treating a microfibrillated cellulose with an alkali solution. The molded article can be largely increased in tensile strength or flexural strength, tensile strain at break or flexural strain at break, and fracture toughness (work-of-fracture) compared to a molded article produced with resin containing a conventional microfibrillated cellulose.


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Yano, Hiroyuki. (2014). Microfibrillated cellulose having cellulose type-ii crystalline structure, and molded article containing the microfibrillated cellulose (U.S. Patent No. 8728272). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8728272

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