Ozone generator
CA 2023083 A1 · Owner: Carvalho, Rocky J. · Inventors: Carvalho, Rocky J.; Carvalho, Rocky J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The ozone generator of the present invention is comprised of a glass tube having an inert gas in it and a tungsten or stainless steel electrode which extends from one of its ends to the other. A grid which surrounds the tube receives current from the electrode to convert oxygen to ozone. The glass tube is formed from a high temperature, nonleaded glass such as PYREX or GLASSEX and the gas in the tube comprises a mixture of two parts argon and one part helium.
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 August 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2012.
- 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.