	US 11,937,598 B2
	Cerium oxide nanoparticle, decomposition method of nucleic acid, decomposition method of polypeptide, method of producing cerium oxide nanoparticle, oxidizing agent, antioxidant, antifungal agent, and anti-virus agent
Shota Sekiguchi, Kamakura (JP); Kazuhiro Matsuda, Otsu (JP); Takahiro Motoshiromizu, Kamakura (JP); and Masateru Ito, Kamakura (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 17/413,714
Filed by Toray Industries, Inc., Tokyo (JP)
PCT Filed Dec. 17, 2019, PCT No. PCT/JP2019/049348 § 371(c)(1), (2) Date Jun. 14, 2021, PCT Pub. No. WO2020/129963, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-236451 (JP), filed on Dec. 18, 2018.
Prior Publication US 2022/0030857 A1, Feb. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A01N 25/26 (2006.01); A01N 59/16 (2006.01); A01P 1/00 (2006.01); A01P 3/00 (2006.01); C01F 17/10 (2020.01); C01F 17/235 (2020.01); C09K 15/02 (2006.01); C09K 15/30 (2006.01)

CPC A01N 25/26 (2013.01) [A01N 59/16 (2013.01); A01P 1/00 (2021.08); A01P 3/00 (2021.08); C01F 17/10 (2020.01); C01F 17/235 (2020.01); C09K 15/02 (2013.01); C09K 15/30 (2013.01)]

12 Claims

1. A cerium oxide nanoparticle comprising:

a center nucleus formed of a mixture of Ce₂O₃and CeO₂; and

a polymer layer covering the center nucleus, the polymer layer being formed of a vinyl polymer having a heterocyclic amine skeleton or of a polyamide having a heterocyclic amine skeleton,

wherein a ratio of Ce⁴⁺to Ce³⁺is 1.24 to 4.00.