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Expired Canadian patentCanada

X-ray detector

CA 1101134 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Stevels, Albert L.N.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

PHN. 8720. 20-1-1978. ABSTRACT :, The X-ray detection element of an X-ray detector is composed of a fluorescent material having a short afterglow and a high sensitivity to the Xradiation to be detected. for the fluorescent material use is notably made of cerium-activated phosphors such as yttrium phosphors, lanthanum phosphors or lutetium phosphors. - 13 -

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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 May 12, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 21, 1978
GrantedMay 12, 1981
Term endedMay 12, 1998
Patent numberCA 1101134 A
Classification (IPC)G01T1/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 21, 1978Patent grantedMay 12, 1981Term endedMay 12, 1998

Sources & verification

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