×

Systems and methods for determining authenticity of substances

  • US 7,965,183 B1
  • Filed: 07/10/2007
  • Issued: 06/21/2011
  • Est. Priority Date: 07/10/2007
  • Status: Expired due to Fees
First Claim
Patent Images

1. A system for determining authenticity of substances, the system comprising:

  • a plurality of radio frequency (RF) sensors distributed in a predefined location pattern relative to a location for placing a substance under analysis, each of the plurality of RF sensors being configured to transmit a response to an interrogation signal with a unique identifier;

    an RF transmitter that transmits a plurality of sequences of interrogation signals over a plurality of different frequency bands at one or more power levels;

    an RF receiver that receives responses to the plurality of sequences of interrogation signals transmitted from the plurality of RF sensors; and

    a response pattern analyzer that determines response patterns for the plurality of RF sensors to the interrogation sequences and transmits a difference indicator if at least one of the determined response patterns varies from a predetermined signature of an authentic substance.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×