X-ray apparatus for applying a predetermined flux to an interior surface of a body cavity
CA 2194759 C · Owner: Smith, Donald O. · Inventors: Smith, Donald O.; Sliski, Alan P.; Harte, Kenneth J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an x-ray source (10) for irradiating a surface defining a body cavity. The source comprises a housing (12) an , elongated tubular probe (14), a target assembly (26) and an inflatable , balloon (410). The housing (12) encloses an electron beam source (22) and includes elements (23) for generating an electron beam along a beam path. The tubular probe (14) extends along a central axis from the housing (12) about the beam path. The target assembly (26) extends along the central axis and is coupled to the probe distal end. The target assembly (26) includes a target element (26A, 26B) adapted to emit x-rays in response to electrons incident thereon. The …
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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 11, 1995 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.