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Expired Canadian patentCanada

Explosive detection system

CA 1302591 C · Owner: Science Applications International Corporation · Inventors: Shea, Patrick M.; Gozani, Tsahi

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure A system for detecting the presence of explosives contained in an object under observation including a cavity, structure for receiving the object and a radiation source for producing'thermal neutrons directed to the object under observation. Gamma rays are produced to represent the presence of explosives and as an example the concentration of nitrogen contained in the object. Inorganic scintillators are located within the cavity structure to detect the gamma rays and produce an output signal representative of the presence and concentration of the nitrogen and/or other elements contained in the object. The inorganic scintillators are formed as a ring around the …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 20, 1988
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302591 C
Classification (IPC)G01V5/00 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMay 20, 1988Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.