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
Preparation and use of meristematic cells belonging to the Dendrobium phalaenopsis, Ansellia, Polyrrhiza, Vanilla, Cattleya and Vanda genera with high content of phenylpropanoids, hydrosoluble
Downhole telemetry system
Architectural panel with millet and grass
Ink, ink jet recording method, ink cartridge, and ink jet recording apparatus
Clock generator circuit for a charge pump
Mobile communication terminal provided with handsfree function and controlling method thereof
Multi-port, gigabit SERDES transceiver capable of automatic fail switchover
  Randomly Featured Patents
Image forming apparatus, rotation type development unit, and toner replenishment container
Multiple separator arrangement for fluid-particle separation
Process for obtaining hydrophobically modified emulsion polymers and polymers obtained thereby
Variable threshold semiconductor device and method of operating same
Clamp ring for shielding a substrate during film layer deposition
Three-dimensional configurations providing electromagnetic interference shielding for electronics enclosures
CPC (copper pipe cleaner) attachment for standard power drills
Current collector for amusement park bumper cars
Scalpel blade remover
Start-up automatic frequency control (AFC) method and apparatus