Apparatus and method to reduce automotive emissions using filter catalyst interactive with uego
CA 2033400 C · Owner: Anderson, Michael J. · Inventors: Anderson, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus system to control unwanted automotive emissions by use of a closed loop feedback system between an engine and catalyst, the system providing a feedback response time of less than 60 milliseconds and a resolution control for maintaining A/F ratio within ~ .01-.02% of stoichiometry irrespective of random combustion effects, variations in fuel injection variations in intake air, variations in cylinder-to-cylinder conditions, and variations in exhaust turbulence. The system has: a low mass three-way filter catalyst stationed close to the source of the stream and effective to filter out random combustion effects within the stream; a high mass three-way main catalyst stationed …
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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 December 28, 1990 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 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.