Method and metal casting case for reducing pollutant emissions in foundry practices
CA 2456936 A1 · Owner: Climarotec Gesellschaft Fuer Raumklimatische Spezialanlagen Mbh · Inventors: Dierssen, Gustav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for reducing pollutant emissions released , particularly in the form of pyrolysis products from metal casting cases used , in foundry practices. The aim of the invention is to reduce said emissions at low cost. This aim is achieved, whereby at least one additional combustible substance is added to the metal casting cases. Said substance changes into gaseous form on heating, provided that it is not gaseous and burns together , with the pollutants when leaving the metal casting cases. The additional combustible substance contains at least one organic substance preferably a , wax or an oil, ideally a ketone an aldehyde, ether or alcohol. It can also be …
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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 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2024.
- 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
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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.