Method and apparatus for producing ozone by corona discharge
CA 2081014 A1 · Owner: Bell, Maxwell Gilbert · Inventors: Smith, Stephen John; Cable, Dale Christian; Bell, Maxwell Gilbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an apparatus and method for producing ozone from a feed gas containing molecular oxygen by means of a corona discharge. The apparatus and method comprises passing the feed gas between two concentric tubes of a dielectric material. The inner tube containing an electrode with a plurality of windings of a conductive wire electrode around its inner surface or a central rod inside its inner surface. The outer tube having a plurality of windings of a conducting wire electrode around its outer surface. Both electrodes are connected to a high voltage AC electric current device, whereby the current flowing between the electrodes through the dielectric tubes and the …
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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 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2014.
- 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.