Process and devices to clean and reuse displaced outgoing air containing additives (e.g. solvents) or pollutants
CA 2264627 A1 · Owner: Thielen, Gunter · Inventors: Thielen, Gunter; Harle, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a process and devices to clean and reuse displaced outgoing air containing additives (e.g. solvents) or pollutants especially to clean and reuse outgoing air with solvents displaced from drying devices in offset web-fed rotary presses. In the first stage of the process the outgoing air is passed through at least one condenser so that the additives or pollutants contained in the air can be condensed out. In the second step of the process the outgoing air treated from the first stage of the process is passed through at least one separator element in order to clean said air further from condensed additives or pollutants contained therein. Finally, the …
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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 August 29, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.