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:
Apr. 02, 2002
Filed:
Dec. 22, 1999
Kabushiki Kaisha Toshiba, , JP;
Abstract
A cold accumulating material comprises a set of particulate cold accumulating substances, pores formed between the particulate cold accumulating substances, and a binder for mutually binding the particulate cold accumulating substances, wherein a porosity of the cold accumulating material is 15-70 vol %. A median diameter of the pores existing in the cold accumulating material is preferably set to 10-300 &mgr;m. An oxygen concentration at an area ranging from a surface of the particulate cold accumulating substance to a portion having a depth of 100 angstroms (A) from the surface is preferably set to 5-80 at %. According to the above structure, there can be provided a cold accumulating material and a refrigerator using the cold accumulating material which is free from being finely pulverized, and has a high mechanical strength, and capable of exhibiting a significant refrigerating performance at low temperature range for a long period of time in a stable condition, and which can be mass-produced with a high production yield and low cost.