Platinum-free three-way catalyst
CA 1324123 C · Owner: Koberstein, Edgar · Inventors: Voelker, Herbert; Engler, Bernd; Koberstein, Edgar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three-way catalyst consists of active aluminum oxide palladium, platinum, and cerium dioxide the catalyst, containing 5 to 20%-wt CeO2 if the A12O3 is present as the bulk-material carrier, and 25 to 50%-wt CeO2 if the A12O3 is present as a coating on a honeycomb-structured inert carrier.
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
- Granted November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.