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Expired Canadian patentCanada

Miniaturized low power x-ray source

CA 2090718 C · Owner: Nomikos, Peter M. · Inventors: Nomikos, Peter M.; Sliski, Alan P.; Dinsmore, Mark T.

CIPO record

Overview

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

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Abstract From the Canadian patent

A low-level, electron beam (16) activated source (10) of preselected or programmable duration and intensity x-rays. The source may be fully or partially implanted into or surface-mounted onto a , desired area to effect a preselected irradiated region. In medical applications a method of treating malignant cells, such as tumors in vivo, utilizing the apparatus described above.

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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

  • Filed August 30, 1991 and granted May 30, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 30, 1991
GrantedMay 30, 2000
Term endedAugust 30, 2011
Patent numberCA 2090718 C
Classification (IPC)H05G1/34 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedAug 30, 1991Patent grantedMay 30, 2000Term endedAug 30, 2011

Sources & verification

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