A catalytic automotive emission control process with improved cold-start behavior
CA 2103647 C · Owner: Ostgathe, Klaus · Inventors: Engler, Bernd; Ostgathe, Klaus; Lindner, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A considerable reduction in hydrocarbon emissions during the cold start of internal combustion engines can be achieved if the actual exhaust gas catalyst is preceded in the exhaust pipe by a hydrocarbon adsorber of which the heat capacity is made greater than the heat capacity of the following catalyst through a suitable choice of material and configuration of the adsorber.
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 August 9, 1993 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2015.
- 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.