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Expired Canadian patentCanada

Apparatus for developing latent images of x-rayed objects

CA 1110442 A · Owner: Agfa-Gevaert Aktiengesellschaft · Inventors: Farber, Heinrich; Zrenner, Bernhard; Muller, Jurgen

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Abstract From the Canadian patent

Apparatus for developing latent images of X-rayed objects on dielectric receptor sheets has a carrier which advances receptor sheets along a circular path about a horizontal axis. A tank with an open top is installed below the six o'clock position of the carrier and contains a horizontal developing electrode having narrow elongated channels extending in parallelism with the axis of the carrier. A pump draws liquid developer from a vessel in which the tank is confined and admits the developer into the bottom zone of the tank wherein the developer rises to fill and rise above the channels of the electrode and to thereby contact the latent image of a sheet on the moving carrier. The surplus of …

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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 October 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.
FiledJuly 20, 1978
GrantedOctober 13, 1981
Term endedOctober 13, 1998
Patent numberCA 1110442 A
Classification (IPC)G03G15/10

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJuly 20, 1978Patent grantedOct 13, 1981Term endedOct 13, 1998

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