Ozone generator control system
CA 2236769 A1 · Owner: Dunder, Ove K. · Inventors: Dunder, Ove K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ozone generator control circuit comprising corona discharge circuitry to, electrically control a regulator voltage applied to a pulse generating device for a corona discharge; circuitry to electrically control the frequency of the pulses applied to the pulse generator for the corona discharge. The electrical control circuit is optically isolated from the pulse generating circuit.
Read the whole patent
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 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2020.
- 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.