Catalysts for the oxichlorination of ethylene, method for preparing them, and oxichlorination method using the same
CA 2190704 C · Owner: Montecatini Tecnologie S.R.L. · Inventors: Cavalli, Luigi; Rubini, Carlo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catalysts for the oxichlorination of ethylene to 1,2dichlorethane, comprising copper chloride as a main component, in the form of hollow cylindrical granules having at least three through holes, obtained by compression forming by using, for lubrication, a lubricant placed on the walls of the forming chamber and on the plungers of the mold.
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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 November 19, 1996 and granted March 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.