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. 29, 2015
Filed:
Mar. 31, 2011
Hitoshi Shirase, Kawagoe, JP;
Hitoshi Shirase, Kawagoe, JP;
NICHIYU GIKEN KOGYO CO., LTD., Kawagoe, JP;
Abstract
A temperature management indictor having simple structure is provided, which, not containing a hazardous metal, especially mercury among others, is safe and excellently durable, especially durable against light and repetition of heating and cooling cycle, is capable of indicating specific temperature ranges by means of reversible color changes, and also is able, as need be, to indicate an arrival at a specific temperature by means of an irreversible color change. A temperature management indicatorcomprises; a reversible temperature indicating memberincluding reversible temperature indicating pigment particles devoid of mercury, which reversibly undergoes color changes at a predetermined temperature, wherein in the reversible temperature indicating member, the reversible temperature indicating pigment particles contain an iron-containing complex compound and are dispensed to be dispersed in a resin thereof.