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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 12275648 B1

PDFFull Text
Date of Patent:
Apr. 14, 2025

Filed:

Oct. 12, 2021

Near-infrared absorbing particles, method for producing near-infrared absorbing particles, near-infrared absorbing particle dispersion body, near- infrared absorbing laminate, and near-infrared absorbing transparent base material

Applicant:

Sumitomo Metal Mining Co., Ltd., Tokyo, JP;

Inventors:

Kenji Adachi, Chiba, JP;

Masao Wakabayashi, Chiba, JP;

Satoshi Yoshio, Ehime, JP;

Hirofumi Tsunematsu, Chiba, JP;

Assignee:

SUMITOMO METAL MINING CO., LTD., Tokyo, JP;

Attorney:

IPUSA, PLLC

Primary Examiner:

Kim S Horger

Int. Cl.
CPC ...
C01G 41/00 (2005.12); C09C 1/00 (2005.12); C09C 3/06 (2005.12); C09D 5/32 (2005.12); C09D 7/40 (2017.12); C09D 7/62 (2017.12); G02B 5/20 (2005.12); C08K 3/22 (2005.12);
U.S. Cl.
CPC ...
C01G 41/006 (2012.12); C09C 1/00 (2012.12); C09C 3/063 (2012.12); C09D 5/32 (2012.12); C09D 7/62 (2017.12); C09D 7/67 (2017.12); C09D 7/68 (2017.12); G02B 5/206 (2012.12); G02B 5/208 (2012.12); C01P 2002/52 (2012.12); C01P 2002/72 (2012.12); C01P 2002/76 (2012.12); C01P 2002/84 (2012.12); C01P 2004/04 (2012.12); C01P 2004/62 (2012.12); C01P 2004/64 (2012.12); C01P 2004/80 (2012.12); C01P 2006/62 (2012.12); C01P 2006/63 (2012.12); C01P 2006/64 (2012.12); C08K 2003/2258 (2012.12); C08K 2201/005 (2012.12); C08K 2201/011 (2012.12);
Abstract

Near-infrared absorbing particles that includes a cesium tungstate is provided. In the near-infrared absorbing particles, the cesium tungstate has a pseudo hexagonal crystal structure modulated to one or more crystal structures selected from orthorhombic crystal, rhombohedral crystal, and cubic crystal. The cesium tungstate is represented by a general formula CsWO, and has a composition within a region surrounded by four straight lines of x=0.6y, z=2.5y, y=5x, and CsO:WO=m:n (m and n are integers) in a ternary composition diagram with Cs, W, and O at each vertex.

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