Precipitator for diesel or petrol engine exhaust combustion, and related method
CA 2214504 A1 · Owner: Institut Francais Du Petrole · Inventors: Dullien, Francis A. L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for collecting particles from internal combustion engine exhaust gases is disclosed. The apparatus comprises at least one unobstructed flow channel (1) and preferably a plurality of parallel unobstructed flow channels with a diameter of around 3-30 mm and a length of around 10-100 cm. The or each channel is surrounded on all sides by spaces cavities or pockets (2) around 1 mm wide and around 5 mm deep in a direction perpendicular to the axial direction of the channel said channels being such that the exhaust gases flow at around 5-50 m/s. A related method is also disclosed.
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 January 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2019.
- 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.