Process for the preparation of a catalyst or catalyst precursor
CA 2066528 C · Owner: Blankenstein, Paul · Inventors: Blankenstein, Paul; Reinalda, Donald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A zirconia-based catalyst or catalyst precursor is prepared by a process comprising mulling a mixture of zirconia and/or a zirconia precursor and a solvent, which mixture has a solids content of from 20 to 60% by weight, and extruding the mixture. The zirconia precursor is preferably zirconium hydroxide. The resulting extrudates may be impregnated with a suitable catalytically active element, preferably cobalt. The cobalt-containing catalyst produced may be used in a process for the preparation of hydrocarbons from carbon monoxide and hydrogen.
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 April 21, 1992 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2014.
- 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.