Process for manufacturing aluminum fluoride
CA 1071381 A · Owner: Daikin Kogyo Kabushiki Kaisha · Inventors: Takemura, Takumi; Takeuchi, Toshinobu; Aiso, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for manufacturing aluminum fluoride comprises contacting at 300 to 550°C particulate alumina hydrate with hydrogen fluoride to produce aluminum fluoride by continuously introducing a preheated particulate alumina hydrate into a reaction zone and continuously spraying at least stoichiometric amount of liquid hydrogen fluoride to the particulate alumina hydrate continuously fed and separating the resulting aluminum fluoride in the form of particles from gaseous substances. -1-
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
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.