Resources Contact Us Home
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
ZNF217 a new prognostic and predictive biomarker of recurrent invasive and metastatic phenotypes in breast cancer
Organic elelectroluminescent display
Multilayered material sheet and process for its preparation
System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS
Direct chemical vapor deposition of graphene on dielectric surfaces
Image heating device
3D solid-state arrangement for solid state memory
  Randomly Featured Patents
Multi-function trailer apparatus
Optical character scanner
Method and apparatus for monitoring sewage treatment efficiency and determining sewage sources
Vane-type compressor with at least one suction hole
Light fixture
Method and system for determining a desired machine as a function of quality requirements of machined parts
Process of making polyester mixed yarns with fine filaments
Relocatable interrupt handler for test generation and execution
Plants and seeds of hybrid corn variety CH011073
Binary translation of self-modifying code