×

Method and apparatus for detecting concealed substances

  • US 5,479,023 A
  • Filed: 10/11/1994
  • Issued: 12/26/1995
  • Est. Priority Date: 04/09/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for detecting the presence of a number of substances in a container, which comprises irradiating the container with fast neutron and gamma source radiation, measuring the extent to which each species of the source radiation is transmitted through the container, and analyzing the measurements with reference to known characteristic attenuation coefficients and density properties of the substances for each species of the source radiation to determine from the attenuation of both the transmitted neutron and gamma source radiations the presence of said substances.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×