Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Secure product authentication tags










Image Number 4 for United States Patent #7744130.

A tag with features to enable its authenticity to be determined includes a hidden code intermixed with a visible pattern such that the hidden code is not readily detectable under ambient light condition, without the use of a specially designed reader. In one embodiment the tag is formed with a first layer containing a hidden code, formed of reflective elements, which overlies a second layer which is designed to absorb light having a predetermined wavelength (e.g., IR light). The hidden code can be detected by projecting a light source having the predetermined wavelength (e.g., an IR source) at a predetermined angle on the tag and using a sensor to sense the reflection from the tag.








 
 
  Recently Added Patents
Sink
Image forming apparatus and job request control method instructed by authenticated users
Multilayered material sheet and process for its preparation
Navigation device, navigation method, and navigation program
Anti-proliferative and anti-inflammatory agent combination for treatment of vascular disorders with an implantable medical device
Semiconductor IC including pulse generation logic circuit
Cytokine receptors associated with myelogenous haematological proliferative disorders and uses thereof
  Randomly Featured Patents
Dynamo electric machine
Weed screen and trash eliminator
Combating pests with (.+-.)-trans-3-(E/Z-2-chloro-2-(4-chlorophenyl)-vinyl)-2,2-dimethyl-cycl opropanecarboxylic acid (.+-.)-(.alpha.-cyano-3-phenoxy-4-fluoro-benzyl) ester and the individu
Image forming apparatus
Method for manufacturing a semiconductor device
Saliva evacuator
Electrical supply circuit for the generation of separately controllable current pulses
System and methods for an interchangeable lumbar contrast therapy pad
Catalysts for production of phenol and its derivatives
Retractable lamp for an improved document scanner paper path