Composite catalytic converter
CA 2050753 A1 · Owner: Whittenberger, William A. · Inventors: Whittenberger, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a composite catalytic converter for removing pollutant materials from an exhaust gas stream. The converter is composed of all electrically heatable catalytic converter and a conventional ceramic catalytic converter in juxtaposed or embedded axial relationship whereby axial movement in a downstream direction of the electrically heatable catalytic converter core is resisted.
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 September 5, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 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.