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:
Feb. 14, 2017
Filed:
Nov. 14, 2013
Applicant:
Nanobrick Co., Ltd., Suwon-si, KR;
Inventor:
Jae Hyun Joo, Suwon-si, KR;
Assignee:
NANOBRICK CO., LTD., , KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/167 (2006.01); G02F 1/01 (2006.01); G02F 1/29 (2006.01); G07D 7/02 (2016.01); G07D 7/20 (2016.01); B42D 25/36 (2014.01); G02F 1/09 (2006.01); G02F 1/19 (2006.01);
U.S. Cl.
CPC ...
G02F 1/01 (2013.01); B42D 25/36 (2014.10); G02F 1/09 (2013.01); G02F 1/167 (2013.01); G02F 1/19 (2013.01); G02F 1/29 (2013.01); G07D 7/02 (2013.01); G07D 7/2066 (2013.01);
Abstract
A forgery and falsification prevention device includes: a variable material containing unit that contains a variable material in which reflected light or transmitted light is changed in response to an application of a display stimulus; and an operation unit that performs a function of changing a display state of the variable material when an external stimulus is applied, by changing light reflection characteristics or light transmission characteristics of the variable material or changing the display stimulus which is applied to the variable material.