Particulate trap for diesel engines
CA 2312609 A1 · Owner: Oji, Masataka · Inventors: Oji, Masataka; Saito, Hidetoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A particulate trap that burns and removes particulate matters (particles consisting mainly of carbon particles, contained in the exhaust gas of a diesel, engine of a car) trapped by a filter without using a specifically provided heat, source such as a burner or an electric heater even when the car is running in ordinary urban areas, i.e. when the exhaust gas is low in temperature. In the particulate trap, a catalytic converter 3 formed of a metallic porous body , having a three-dimensional network structure carrying an oxidizing catalyst is, placed upstream of a filter 4 that traps particulate matters. The catalytic con-, verter 3 oxidizes NO in the exhaust gas into NO2 which in turn …
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 June 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2022.
- 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.