Title:
APPARATUS FOR PREVENTING COUNTERFEITING AND ALTERATION
Document Type and Number:
WIPO Patent Application WO/2013/183972
Kind Code:
A1
Abstract:
An apparatus for preventing counterfeiting and alteration according to the present invention includes: a magnetic changeable substance carrier part containing a magnetic changeable substance to vary reflected or transmitted light rays as an applied magnetic field is varied; a magnetic field generation part for generating a magnetic field applied to the magnetic changeable substance; and a moveable part for varying at least one of the intensity, direction and pattern of the magnetic field applied to the magnetic changeable substance according to an externally applied stimulus so as to change the appearance of the magnetic changeable substance.
Inventors:
JOO JAE HYUN (KR)
Application Number:
PCT/KR2013/005065
Publication Date:
December 12, 2013
Filing Date:
June 10, 2013
Export Citation:
Assignee:
NANOBRICK CO LTD (KR)
International Classes:
G01D15/12; B42D25/378
Domestic Patent References:
| WO2011107527A1 | 2011-09-09 |
Foreign References:
| KR20110053929A | 2011-05-24 | |||
| KR20110050612A | 2011-05-16 | |||
| KR101119701B1 | 2012-03-20 | |||
| US20090034051A1 | 2009-02-05 |
Other References:
None
Attorney, Agent or Firm:
SU INTELLECTUAL PROPERTY (KR)
특허법인 수 (KR)
특허법인 수 (KR)
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