Form for concealing variable printed information
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 19, 2002
Issued Date -
N/A
app pub date -
Feb 9, 2001
filing date -
Oct 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Variable confidential information (12) is printed over scrambling pattern (14) which is formed of thermochromatic ink. Information (12) cannot be read due to the presence of the underlying scrambling pattern. The information becomes readable when heat is applied to the thermochromatic ink and the optical properties of the thermochromatic ink are altered. Preferably, the alteration of the optical properties of the thermochromatic ink is irreversible
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully