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:
Sep. 02, 2025
Filed:
Nov. 29, 2021
Sharp Kabushiki Kaisha, Sakai, JP;
Kyohei Sezukuri, Sakai, JP;
Katsuya Kido, Sakai, JP;
Yusuke Ikeda, Sakai, JP;
Masakazu Kamura, Sakai, JP;
Yuka Utsumi, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
Provided is a latent heat storage material capable of keeping an object to be refrigerated, such as frozen food or ice cream, cold at a temperature of −20° C. or lower for a long period of time, and of reducing power consumption required at a time of solidification. The latent heat storage material contains 5 to 21 parts by weight of ammonium chloride, 2 to 13 parts by weight of potassium chloride, 5 to 23 parts by weight of urea, and 43 to 88 parts by weight of water. The total of the ammonium chloride, the potassium chloride, the urea, and the water is 100 parts by weight, and the latent heat storage material has a main melting point in a range from −20° C. to −23° C.