Device for generating a fog
CA 2177286 A1 · Owner: Jaico · Inventors: Vandoninck, Alfons
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
The invention relates to a device for generating a fog characterised, in that it comprises: a) a first closed vessel (1) kept at temperature and filled with a mixture having such a vapour pressure curve that pressure can be generated by varying the temperature of the mixture; b) a second closed vessel (2, 2', 2") with a heat exchanger kept at a higher temperature; c) a pipe (7) with a valve (8) connecting the mixture from the first vessel to the second vessel (2, 2', 2"); d) an outlet (16 16') in the wall of the second, vessel (2 2', 2") for distributing the fog generated under pressure in this latter vessel into the environment.
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.
Why it's free to use
- Filed November 24, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2016.
- 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.