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Expired Canadian patentCanada

X-ray inspection system for security screening application

CA 1090482 A · Owner: Beland, Robert J.L. · Inventors: Beland, Robert J.L.; Stefanski, Czeslawa; Stefanski, Wlodzimierz K.

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

The invention relates to an X-ray inspection system for security screening applications of the type which are employed at aircraft terminals to determine if dangerous items are being carried in passenger luggage. The system in accordance with the invention includes a detector station having a linear array of phototransistors, covered with a fluorescent screen, disposed on one side of the conveyor belt which carries the luggage past the detector station. On the other side of the belt, and disposed in parallel arrangement with the array is an X-ray head, and objects passing between the array and the source will alter the density of the rays emitted by the source so that an X-ray picture can …

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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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 22, 1977
GrantedNovember 25, 1980
Term endedNovember 25, 1997
Patent numberCA 1090482 A
Classification (IPC)G01N23/08 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedJuly 22, 1977Patent grantedNov 25, 1980Term endedNov 25, 1997

Sources & verification

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