Optically variable surface pattern
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 13, 2005
Grant Date -
Mar 31, 2005
app pub date -
Jun 5, 2002
filing date -
Jun 20, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optically variable surface pattern (1) contains relief structures (9.1; 9.2; 9.3) for producing at least two representations (2; 3; 4). The relief structures (9.1; 9.2; 9.3) have a period length (L) of at least five micrometers and are sawtooth-shaped. The relief structures (9.1; 9.2; 9.3) associated with different representations (2; 3; 4) have different angles of inclination (α;β;γ). The angles of inclination are so selected that the representations (2; 3; 4) can be perceived separately by a viewer on the one hand and on the other hand when producing a copy by means of a color photocopier they are all transferred onto the copy.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2002 Application Filing Year
- G03H Class
- 131 Applications Filed
- 51 Patents Issued To-Date
- 38.94 % Issued To-Date
