Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Security device based on customized microprism film










Image Number 12 for United States Patent #7903308.

A security device comprises at least two regions, each region comprising a prismatic surface structure defining an array of substantially planar facets. Each region forms a reflector due to total internal reflection when viewed at least one first viewing angle and is transparent when viewed at at least one second viewing angle. The said at least one first viewing angle of one region is different from the at least one first viewing angle of the other region.








 
 
  Recently Added Patents
Identification of electrical grid phase information for end-points in a grid network
Inhibitors of bacterial nitric oxide synthase, and related screening methods
Satellite mounting poles
Per-request control of DNS behavior
Method for mapping resource units
Semiconductor device with an amorphous semi-insulating layer, temperature sensor, and method of manufacturing a semiconductor device
Vending machine
  Randomly Featured Patents
Thread-shared software code caches
Semiconductor memory device and method of manufacturing the same
Lubricious coating
Device for scraping off material on lottery tickets
Maximizing performance under a power envelope constraint
Semiconductor memory device with capacitor on opposite surface of substrate
Delivery devices for bioabsorbable staples
N-colorant gamut construction
Display device for camera
Method for producing amine-formaldehyde microcapsules and photosensitive microcapsules produced thereby