A liquid barrier and methods of using the same
CA 2484330 A1 · Owner: Martin, Timothy A. · Inventors: Ramsey, Thomas H.; Clendenning, Michael Andrew; Martin, Timothy A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid barrier is disclosed that comprises a porous hydrophobic material which allows the flow of gases (e.g. corrosive gases) but inhibits the flow of liquids, including aqueous liquids. A specific embodiment of the invention relates to a venturi which incorporates a liquid barrier that allows the flow of gases (e.g. ozone and air) but inhibits the flow of liquids. Another specific embodiment of the invention relates to an ozone generation system that includes an ozone generator and a liquid barrier made of a porous hydrophobic material, which allows the flow of ozone but inhibits the flow back of liquids to the ozone generator. The invention also encompasses methods of …
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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 May 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2025.
- 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.