Apparatus for the cleaning of exhaust gases
CA 2084686 C · Owner: Latsch, Reinhard · Inventors: Spies, Karl-Heinrich; Latsch, Reinhard; Kurr, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for cleaning exhaust gas from a combustion installation includes a soot filter which is positioned in the exhaust gas flow. The soot filter has a flexible filter band which in a first zone is subjected to a through flow of the exhaust gas and can be continuously or intermittently advanced and renewed from a storage roll by a drive. The filter band is supported in the first zone on and movable by a flexible, gas permeable continuous transport band which provides the necessary longitudinal tension. The filter band and the particles separated from the exhaust gas are burnt together in a second zone. Thus both the filter band and the particles on it are disposed of in the apparatus …
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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 7, 1992 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2014.
- 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.