Expired Canadian patentCanada
A tunable semiconductor component provided with a current barrier
CA 2533225 C · Owner: Ducharme, Mathieu · Inventors: Lacourse, Alain; Gagnon, Yves; Ducharme, Mathieu
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Semiconductor component or device is provided which includes a current barrier element and for which the impedance may be tuned (i.e. modified changed, etc.) using a focused heating source.
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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 January 19, 2006 and granted March 22, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 19, 2006
GrantedMarch 22, 2016
Term endedJanuary 19, 2026
Patent numberCA 2533225 C
Classification (IPC)H01L23/64 +1 more
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.