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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 12760186 B1

PDFFull Text
Date of Patent:
Oct. 13, 2026

Filed:

Mar. 28, 2022

Liquid dispersion of fluoride particles, composition for forming optical film, and optical film

Applicant:

Stella Chemifa Corporation, Osaka, JP;

Inventors:

Hiroya Yamamoto, Osaka, JP;

Rui Hasebe, Osaka, JP;

Megumi Tomisaki, Osaka, JP;

Masanori Uraya, Osaka, JP;

Tetsuo Nishida, Osaka, JP;

Keiichi Nii, Osaka, JP;

Keigo Fujiwara, Osaka, JP;

Assignee:

STELLA CHEMIFA CORPORATION, , JP;

Attorney:

OSTROLENK FABER LLP

Primary Examiner:

Dung T Nguyen

Int. Cl.
CPC ...
C09D 5/02 (2006.01); C09D 5/00 (2006.01); G02B 1/11 (2015.01); C09D 7/20 (2018.01); C09D 7/40 (2018.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01);
U.S. Cl.
CPC ...
C09D 5/027 (2013.01); C09D 5/006 (2013.01); G02B 1/11 (2013.01); C09D 7/20 (2018.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/67 (2018.01);
Abstract

Provided are a liquid dispersion of fluoride particles having a refractive index lower than that of, for example, magnesium fluoride, the liquid dispersion being excellent in dispersibility and suitable for production of an optical film such as an antireflection film; a composition for forming an optical film; and an optical film. A liquid dispersion of fluoride particles according to the present invention contains: fluoride particles; an anionic surfactant as a dispersant for the fluoride particles; and an organic solvent, wherein the fluoride particles contain at least aluminum, an alkali metal, and an alkaline earth metal as an optional element in a composition of the fluoride particles, and the fluoride particles are dispersed in the organic solvent.

Find Patent Forward Citations

Yamamoto, Hiroya. (2026). Liquid dispersion of fluoride particles, composition for forming optical film, and optical film (U.S. Patent No. 12760186). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12760186

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

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