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Expired Canadian patentCanada

Radiographic element

CA 1302773 C · Owner: Eastman Kodak Company · Inventors: Kelly, James Edward; Dickerson, Robert Edward; Diehl, Donald Richard

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

Abstract of the Disclosure A radiographic element is disclosed which exhibits high covering power, reduced crossover without emulsion desensitization, reduced wet pressure sensitivity, and can be fully processed in a rapid transport processor in less than 90 seconds. The radiographic is comprised of tabular grain emulsion layers on opposite sides of a transparent film support and processing solution decolorizable dye particles in hydrophilic colloid layers interposed between the emulsion layers and the support. Hydrophilic colloid on each side of the support is in the range of from 35 to 65 mg/dm , with the interposed layer containing hydrophilic colloid in the amount of at least 10 mg/dm2.

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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
  • 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 12, 1988
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1302773 C
Classification (IPC)G03C1/46

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 12, 1988Patent grantedJune 9, 1992Term endedJune 9, 2009

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