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Expired Canadian patentCanada

X-ray system with electrophoretic imaging

CA 1082971 A · Owner: Xonics, Inc. · Inventors: Lewis, John H.; Allan, Frank V.; Fenn, John B. Jr.

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Abstract From the Canadian patent

An electronradiography imaging chamber providing a real time visual image. An electronradiography imaging chamber with electrophoretic particles in the electrode gap with the, particles being selectively moved to a transparent electrode as a result of the electrostatic charge image formed by absorbtion of incoming X-ray radiation in the gap. A dark field illumination viewing configuration with the deposited particles providing light scattering giving a visual image with low radiation dosage. An imaging chamber which can be cyclically operated at a relatively high repetition rate typically 10 to 20 images per second, thereby providing real time viewing of the object. -1-

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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 August 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 1997.
  • 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 18, 1976
GrantedAugust 5, 1980
Term endedAugust 5, 1997
Patent numberCA 1082971 A
Classification (IPC)G03G13/00 +2 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedMarch 18, 1976Patent grantedAug 5, 1980Term endedAug 5, 1997

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