An imaging system using a high-density avalanche chamber converter
CA 2294271 C · Owner: Oxford Positron Systems Ltd. · Inventors: Jeavons, Alan Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An imaging system module comprising: a pair of high density avalanche chamber converters (11, 12) each including alternate layers (15 16) of conducting and , non-conducting material and an array of holes (17) extending through the alternate layers (15, 16), thefirst converter (11) having conducting elements (18) extending parallel to each other to form a first cathode on or adjacent to a face of the converter (11) and the second converter (11) having conducting elements (19) extending parallel to each other in a direction orthogonal to the conducting elements (18) to form a second cathode on or adjacent to a face of the second converter (12) and an anode (21) formed by , parallel …
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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 June 19, 1998 and granted January 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2020.
- 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.