Security substrate for documents of value
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 3, 2004
Grant Date -
N/A
app pub date -
Sep 25, 2000
filing date -
Sep 25, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A security substrate for a document of value comprises a laminate including a generally transparent core layer and generally transparent outer layers on opposite sides of the core layer. At least one interference filter is embedded within the laminate. The interference filter includes a highly reflective opaque layer on a surface of the core layer and an optically variable thin film multilayer overlying at least a portion of the opaque layer. The interference filter is covered by one of the outer layers.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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