Fibre optic sensor for sensing particle movement in a catalytic reactor
CA 2187691 C · Owner: The University Of Western Ontario · Inventors: Young, Brad J.; De Lasa, Hugo I.; Krol, Stefan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical probe for sensing presence of small moving particles passing through a defined sensing region comprises an emitter optic fibre for transmitting from its tip radiant energy outwardly of the probe;, a receptor optic fibre for receiving radiant energy reflected by such particles moving through said sensing region; a lens for focusing radiant energy emitted from the emitter tip into a focal region, spaced outwardly of the probe and which diverges outwardly into a defined high density radiant energy region where the receptor optic fibre defines a diverging viewing region projecting outwardly towards the high density radiant energy region the receptor optic, fibre being positioned …
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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 October 11, 1996 and granted January 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2018.
- 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.