Catalysts for oxidation of carbon monoxide
CA 2014559 C · Owner: Tooley, Patricia A. · Inventors: Tooley, Patricia A.; Brown, Scott H.; Kolts, John H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for preparing a reduced material comprising (a) alumina and/or magnesium aluminate as support material (b) platinum, metal and (c) an iron component the improvement comprises: (1) treating the reduced composition of matter with an acidic liquid; (2) heating the acid-treated material, and (3) treating the material obtained in step (2) with a reducing gas. The prepared material is used as a catalyst for converting CO and O2 to CO2.
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 11, 1990 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.