Treatment of hygroscopic material
CA 2173723 A1 · Owner: White, Victor Albert Montgomery · Inventors: White, Victor Albert Montgomery; Potts, Stephen Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for providing a water vapour-air mixture for treating a hygroscopic material comprising a mixing chamber (10) means, for providing air to the mixing chamber (10) at a temperature in the range of 0 to 80 °C and at a pressure in the range of 1 to 3 bar means, for providing steam to the mixing chamber (10) at a temperature in the range of 100 to 250 °C and at a pressure in the range of 1 to 10 bar, the mixing chamber (10) having an outlet in connection with a treatment chamber (50) to provide the treatment chamber (52) with a water vapour-air mixture at a temperature below 200 °C and at a pressure in the range of 1 to 1.5 bar.
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 November 8, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 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.