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.

Date of Patent:
Jan. 20, 2026

Filed:

Feb. 21, 2023
Applicant:

Kanagawa University, Yokohama, JP;

Inventor:

Nobuhiro Kihara, Yokohama, JP;

Assignee:

KANAGAWA UNIVERSITY, Yokohama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/04 (2006.01); C01B 32/05 (2017.01);
U.S. Cl.
CPC ...
C08J 5/042 (2013.01); C01B 32/05 (2017.08); C08J 2363/00 (2013.01);
Abstract

To provide a fiber-reinforced plastic from which fibers can be readily recovered in a reusable state. A fiber-reinforced plastic contains a matrix polymer compound having cleavable functional groups represented by Formula (1), where wavy lines represent bonds to other atoms. When the polymer compound having cleavable functional groups represented by Formula (1) is put into contact with an aqueous solution of hypochlorous acid or a salt thereof, scission occurs between the CO—NH bonds in Formula (1), resulting in conversion to a lower molecular weight compound. This matrix polymer compound is thereby soluble in an appropriate solvent and is separated from the fiber contained in the FRP.


Find Patent Forward Citations

Kihara, Nobuhiro. (2026). Fiber-reinforced plastics and methods for recovering fibers contained therein (U.S. Patent No. 12528920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12528920

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

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