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Expired Canadian patentCanada

Radiation imaging panel

CA 2193649 C · Owner: Westaim Advanced Display Technologies Incorporated · Inventors: Huang, Zhong Shou

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

A radiation imaging system comprising a capacitive coupling radiation detector for directly converting incidence radiation to electrical charges a storage , capacitor for storing the generated charges a read-out switch for , periodically outputting the charges stored on the storage capacitor and a , reset switch for periodically re-setting the radiation detector.

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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 July 27, 1994 and granted January 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2016.
  • 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 27, 1994
GrantedJanuary 21, 2003
Term endedJuly 27, 2014
Patent numberCA 2193649 C
Classification (IPC)H04N5/30 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJuly 27, 1994Patent grantedJan 21, 2003Term endedJuly 27, 2014

Sources & verification

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