Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ink with cohesive failure and identification document including same










Image Number 5 for United States Patent #7143950.

The present invention provides ink that is designed to cohesively fail upon a de-lamination attack. A resulting failure pattern is preferably difficult to predict. The ink is applied to an identification document including a core and laminate layer. The ink is characterized such that an adhesive strength of the ink to the core and an adhesive strength of the ink to the laminate layer is each greater than the cohesive strength of the ink itself. Thus, the ink rips apart in a somewhat random-like manner upon a de-lamination attack. The ink can be arranged in interwoven or interlocking patterns or in other desired patterns and locations.








 
 
  Recently Added Patents
Charge pump circuit and power-supply method for dynamically adjusting output voltage
Oscillation circuit
Avalanche photodiodes having accurate and reproductible amplification layer
Process for recovering and recycling an acid catalyst
Serial transmission system including transmitter apparatus and receiver apparatus, for use in transmission of AV data
Coordinate locating method and apparatus
Microporous membranes and methods for producing and using such membranes
  Randomly Featured Patents
System to optimize artificial lighting levels with increasing daylight level
Raindrop detection wiper
Crawlspace air apparatus
Method of preventing proliferation of retinal pigment epithelium by retinoic acid receptor agonists
System and method for improving information retrieval from a database
Fibrous material for composite materials, fiber-reinforced metal produced therefrom, and process for producing same
Magnetic surgical retractor
Mounting bracket for safety device employing beam path
Process for production of semiconductor device having an insulating film of low dielectric constant
Extraction of metals from aqueous solutions with cyclic organic carbonates