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:
Oct. 25, 2016
Filed:
Jun. 27, 2012
Seung Ju Lee, Seoul, KR;
Seung Won Jung, Gyeonggi-do, KR;
Seung Ju Lee, Seoul, KR;
Seung Won Jung, Gyeonggi-do, KR;
Abstract
The present invention relates to a two-dimensional code-type time-temperature indicator the color or shape of which changes in accordance with time and temperature conditions, and to a method for manufacturing the time-temperature indicator, to a quality guarantee system using the time-temperature indicator, and to a quality guarantee method using the quality guarantee system. The time-temperature indicator comprises: nanobeads containing a microorganism for generating lactic acids using nutrient components, an indicating agent for indicating the change in color by means of the generated lactic acids, an immobilization material for immobilizing the microorganism, the indicating agent, and the nutrient components; a base having a bonding layer; and a cover film.