Catalytic converter for use in hot exhaust gases and process for making it
CA 2088583 A1 · Owner: Siemens Aktiengesellschaft · Inventors: Landgraf, Norbert; Stamm, Hubert; Hums, Erich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In catalysts for use in hot exhaust gases with a surface-roughened metal bearing structure and a catalytically active coating applied thereto, there is the problem that the catalytically active coating can fall off the metal bearing structure. It is therefore the aim of the invention to improve the adhesion of the catalytically active substance to the bearing structure. To this end according, to the invention, the metal bearing structure is roughened by spark erosion. Then the catalytically active coating can be keyed to the metal bearing structure roughened by spark erosion with the aid of a cross linking agent. The invention is applicable to catalytically coated plate catalyst systems.
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 July 31, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2013.
- 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.