Ozone generating apparatus
CA 2298925 C · Owner: Mukai, Masahiro · Inventors: Mukai, Masahiro; Yoshizawa, Kenji; Ozawa, Tateki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ozone generating apparatus that includes two electrodes mutually opposed to generate a voltage discharge in response to high voltage applied therebetween. Each electrode includes at least one flat surface that is parallel to at least one flat surface of the other electrode. A dielectric is disposed between the electrodes to provide insulation between the electrodes. A gas supply mechanism to supply an oxygen-containing gas between the electrodes to generate ozone by the voltage discharge is also provided. Non-discharge portions generating no discharge dispersed over substantially an entire surface of at least one of the electrodes are provided to maintain a constant air gap length of the …
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 April 21, 1995 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2017.
- 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.