Process for and oxychlorination catalyst, and their application to 1-2 dichloroethane production
CA 2045187 C · Owner: Atochem · Inventors: Clair, Rene; Bachelard, Roland; Correia, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for oxychlorination of a hydrocarbon to form a chlorinated hydrocarbon in which the hydrocarbon, a gas containing oxygen and gaseous hydrochloric acid flow over a fluidizable carrier comprising a mixture of an oxychlorination catalyst and particles of at least one catalytically and chemically inert solid substance characterized in that a solution or suspension of a copper powder compound having catalytic properties is added to the fluidized carrier.
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 June 21, 1991 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2013.
- 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.