Device for purifying the exhaust gases of diesel engines
CA 1250809 A · Owner: Degussa Ag · Inventors: Engler, Bernd; Koberstein, Edgar; Domesle, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a device for purifying the exhaust gases of diesel engines. This device has filter elements for separating carbon black particles and these filter elements are arranged in tandem in the cross section of a casing through which the exhaust gas flows. At least one filter element which carries a catalyst lowering the ignition temperature of the carbon black and promoting its burn-off repeatedly alternates, with at least one filter element which carries a catalyst promoting the combustion of gaseous deleterious substances.
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 March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
- 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.