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










Image Number 15 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
Automatic search system and method
Expression of dirigent gene EG261 and its orthologs and paralogs enhances pathogen resistance in plants
Process for producing a carbon-comprising support
Liquid crystal display and method of driving the same
Amide derivatives, process for preparation thereof and use thereof as insecticide
System and method for providing restrictions on the location of peer subnet manager (SM) instances in an infiniband (IB) network
Method and system for parallelizing data copy in a distributed file system
  Randomly Featured Patents
Process insensitive delay line
Decongestant preparation
Method and devices for creating a second playlist based on a first playlist
Arrangement of luminescent materials, wavelength-converting casting compound and light source
Method for conducting over-erase correction
Process for preparing diketopyrrolopyrrole derivatives
Upper torso exercise machine
Optical sampler based on stable, non-absorbing optical hard limiters
Carrier extrusion
Gardenia augusta plant named `PIIGA-I`