Radiation detector
CA 2009178 C · Owner: Jones, Barbara Lynn · Inventors: Jones, Barbara Lynn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite radiation detection and indicating device comprises first, third and fifth layers of a transparent conductive material, a second layer of semiconductive diamond between the first and third layers and a fourth, layer of liquid crystal material between the third and fifth layers. The layers are sandwiched together so that a diodic structure having a radiation-dependent charge storage characteristic is defined by the first second, and third layers, and a liquid crystal display element is defined by the third, fourth and fifth layers. The invention extends to a radiation detector including the composite device, together with an oscillator for applying a charge to the diodic …
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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 February 2, 1990 and granted March 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2012.
- 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
Timeline From CIPO dates
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.