Authentication device for security documents
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 14, 2015
Grant Date -
Sep 11, 2014
app pub date -
Sep 19, 2012
filing date -
Sep 20, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical based authentication device that is attachable to a security document having a substrate. The authentication device includes: a piezoelectric material layer for generating an electric field in response to mechanical stress; and an optically responsive layer directly attached to the piezoelectric material layer, the attached layers being absent a direct electrical connection, the optically responsive layer being operable between a first state and a second state having different ocular perceptions. The optically responsive layer changes from the first state to the second state in response the electric field generated by the piezoelectric material layer.
First Claim
Other Claims data not available
Family
International Classification(s)
- G06Q:DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAP....
- H02N:ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- G07D:SORTING, TESTING, CHANGING, DELIVERING, OR OTHERWI....
- G07F:COIN- FREED OR LIKE APPARATUS
- B42D:BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER O....
- G06K:RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD ....
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- G06Q Class
- 0 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 14, 2027 |
