Fixed bed fischer-tropsch catalyst and manufacture thereof
CA 2028588 C · Owner: Olivier, Anthony J. · Inventors: Duvenhage, Dawid J.; De Haan, Robert; Olivier, Anthony J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure describes a catalyst composition for use in a Fischer-Tropsch process, in which the composition comprises activated carbon. It has been found that activated carbon of which at least 90 percent of the particles is smaller than 45 micron or of which at least 90 percent of the particles fall within the range of 850 micron to 1200 micron yields particularly good results. The disclosure also describes a method of manufacturing an iron-based catalyst composition for use in a Fischer-Tropsch process, in which activated carbon is added to any of the catalyst pre ursors at any stage prior to the, extrusion stage.
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 October 25, 1990 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 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.