Compensation of simple fibre optic faraday effect sensors
CA 2525248 C · Owner: Bjorn, Lars Norgaard · Inventors: Bjorn, Lars Norgaard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electric current measurement device comprises a housing defining a first , open end and a second open end. A first sealing means has an aperture and has an overall geometrical configuration corresponding to the overall geometrical configuration of the first open end. The first sealing means further comprises an aperture adapted for receiving a first optical fibre to be fixated by means of a first fixture mean. A first optical lens has a reception part for receiving the first fixture means for mounting the first optical fibre in optical continuation with the first optical lens. A first polarisation filter mounted in the housing in optical continuation with the first optical lens. A …
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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 May 12, 2004 and granted March 13, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2026.
- 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.