Catalyst and process for preparing vinyl acetate
CA 2222010 C · Owner: Abel, Roland · Inventors: Abel, Roland
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 catalyst and a process for preparing vinyl acetate in the gas phase from ethylene acetic acid and oxygen or oxygen-containing gases over a catalyst comprising palladium and/or its compounds cadmium compounds and alkali metal compounds on a support wherein the catalyst additionally contains at least one rhenium and/or at least one zirconium compound.
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 May 10, 1996 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 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.
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.