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:
Jun. 29, 2010
Filed:
Nov. 26, 2004
Eisuke Chiba, Tokyo, JP;
Tatsuya Ogawa, Tokyo, JP;
Shinichi Koizumi, Tokyo, JP;
Saori Takahashi, Tokyo, JP;
Eisuke Chiba, Tokyo, JP;
Tatsuya Ogawa, Tokyo, JP;
Shinichi Koizumi, Tokyo, JP;
Saori Takahashi, Tokyo, JP;
Kyodo Printing Co., Ltd., Tokyo, JP;
Abstract
A moisture absorbent material (drying material) with an indicator function is provided without the use of cobalt chloride containing a heavy metal, low molecular organic substance and the like; and a humidity indicator permitting a state of humidity to be found in a simple manner is also provided. The moisture absorbent material with an indicator function () includes a resin layer () containing 5 to 80 wt % zeolite which is provided on at least one surface thereof with a printed layer including a character, shape, picture or the like, so that the printed layer may visibly appear due to the resin layer becoming transparent by moisture absorption. The humidity indicator () is formed by laminating a film () made of a zeolite-containing resin composition, a polyolefin film () having patterns () printed thereon that include characters, symbols, lines or the like, which are printed to have a difference in the print density, and an aluminum foil () through an adhesive, so that the patterns () may be made sequentially visible due to the film () made of the zeolite-containing resin composition becoming transparent by moisture absorption.