Method and apparatus for the detection of ionizing radiation
CA 1186819 A · Owner: N. V. Optische Industrie "De Oude Delft" · Inventors: Burgemeister, Eduard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an apparatus for the detection of ionizing radiation, in which a diamond is used as the radiosensitive element of the detecting apparatus, which diamond has low (2 x 10-3 at.% or less) nitrogen concentration and low (10-3 or less) birefringence, and in which diamond the lifetime of the free carriers generated by the ionizing radiation is 10-6 s or longer. The current-voltage characteristic of the diamond under irradiation is linear at low bias voltage and the dose rate can be determined from the resistivity of the diamond. A synthetic diamond crystal can be used to advantage as the radiosensitive element.
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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 May 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2002.
- 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.