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:
Jan. 16, 2018
Filed:
Jul. 29, 2016
Kangwon National University University-industry Cooperation Foundation, Gangwon-do, KR;
Daehan Paper Co.,ltd., Chungcheongbuk-do, KR;
Taekyung Polymer Co., Ltd., Gyeonggi-do, KR;
Centre Technique DE L ' Industrie Des Papiers, Cartons ET Celluloses, Grenoble, FR;
Myoung Ku Lee, Gangwon-do, KR;
Jeong Yong Ryu, Gangwon-do, KR;
Chang Geun Kim, Gangwon-do, KR;
Kwang Seob Lee, Gangwon-do, KR;
Jae Hoon Lee, Gangwon-do, KR;
Han Je Cho, Seoul, KR;
Hyeok Jun Kwon, Gyeonggi-do, KR;
David Guerin, Grenoble, FR;
Philippe Martinez, Grenoble, FR;
KANGWON NATIONAL UNIVERSITY-INDUSTRY COOPERATION FOUNDATION, Gangwon-Do, KR;
DAEHAN PAPER CO., LTD., Chungcheongbuk-Do, KR;
TAEKYUNG POLYMER CO., LTD., Gyeonggi-Do, KR;
CENTRE TECHNIQUE DE L'INDUSTRIE DES PAPIERS, CARTONS ET CELLULOSES, Grenoble, FR;
Abstract
Using the sympathetic printed-matter according to the present invention, a hidden content can be visualized just by wetting. Therefore, it is possible to remove necessities of the sympathetic ink and a special material such as reagent or equipment for visualizing hidden contents. In addition, since the hidden contents disappear by removing water from the sympathetic printed-matter, the sympathetic printed-matter can be used repeatedly. Using the reading confirmation portion, whether or not the sympathetic printed-matter has been read by any other person can be easily determined. In the sympathetic printing method according to the present invention, a hydrophobic substrate can be formed using an existing gas grafting facility, and an ester hydrolase composition and the reading confirmation portion can be formed using an existing printing method. Therefore, a large amount of sympathetic printed-matters can be produced inexpensively and efficiently.