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:
May. 06, 2025
Filed:
Dec. 25, 2020
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 17/206 (2019.12); C01F 17/235 (2019.12); C02F 1/72 (2022.12); C09K 15/02 (2005.12); C09K 15/30 (2005.12); C02F 101/30 (2005.12);
U.S. Cl.
CPC ...
C01F 17/235 (2019.12); C02F 1/72 (2012.12); C09K 15/02 (2012.12); C09K 15/30 (2012.12); C01P 2004/64 (2012.12); C02F 2101/308 (2012.12);
Abstract
A cerium oxide nanoparticle is produced by mixing a solution of an aromatic heterocyclic compound having no substituent or at least one substituent selected from the group consisting of a methyl group, an ethyl group, an amino group, an aminomethyl group, a monomethylamino group, a dimethylamino group, and a cyano group and containing 2 to 8 carbon atoms and 1 to 4 nitrogen atoms in a ring structure of the aromatic heterocyclic compound, with a solution containing a cerium (III) ion or with a cerium (III) salt, followed by addition of an oxidant.