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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 12617991 B1

PDFFull Text
Date of Patent:
May. 05, 2026

Filed:

Aug. 20, 2020

Microcapsule for latent heat storage materials, method for producing same, powder containing microcapsules for latent heat storage materials, and heat storage device comprising said powder

Applicant:

National University Corporation Hokkaido University, Hokkaido, JP;

Inventors:

Takahiro Nomura, Hokkaido, JP;

Takahiro Kawaguchi, Hokkaido, JP;

Hiroki Sakai, Hokkaido, JP;

Shunsuke Cho, Hokkaido, JP;

Kohei Kashiyama, Hokkaido, JP;

Kenji Sato, Tokyo, JP;

Kazuyuki Miya, Ibaraki, JP;

Yoshitaka Shibuya, Ibaraki, JP;

Assignee:

National University Corporation Hokkaido University, Hokkaido, JP;

Attorney:

Cook Alex Ltd.

Primary Examiner:

Jane L Stanley

Int. Cl.
CPC ...
C09K 5/06 (2006.01); B22F 1/00 (2022.01); B22F 1/17 (2022.01);
U.S. Cl.
CPC ...
C09K 5/063 (2013.01); B22F 1/09 (2022.01); B22F 1/17 (2022.01);
Abstract

A microcapsule for latent heat storage materials includes a metal core containing Zn and Al and a shell covering the metal core. The shell of the microcapsule includes an oxide film containing Zn and O, and an oxide film containing Al and O adjacent to an inner side of the oxide film containing Zn and O. In the microcapsule, a mass ratio of ZnAlOis 4% or less. The mass ratio is determined by analyzing the microcapsule by an XRD (X-ray diffractometer) device and subjecting results to quantitative analysis using a RIR (Reference Integrity Ratio) method.

Find Patent Forward Citations

Nomura, Takahiro. (2026). Microcapsule for latent heat storage materials, method for producing same, powder containing microcapsules for latent heat storage materials, and heat storage device comprising said powder (U.S. Patent No. 12617991). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12617991

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

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