Process for the preparation of extrudates, extrudates, and use of the extrudates
CA 2029960 C · Owner: Decleer, Jos G. M. · Inventors: Meuris, Theofiel; Decleer, Jos G. M.; Derking, Anke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of extrudates suitable for use in the manufacture of catalysts or catalyst carriers, especially Fischer-Tropsch catalysts comprising mulling a mixture of finely divided silica a water soluble compound derived from a metal selected from group IVb of the Periodic Table and water the, mixture having a solids content of 20 to 50% by weight and extruding the mixture. After drying and/or calcining, the extrudates may be impregnated with one or more suitable metal compounds, optionally followed by drying, calcination and/or activation and used as a, catalyst.
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 November 14, 1990 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2012.
- 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.