Process and plant for producing heat treated growth substrate and manure
CA 2064700 A1 · Owner: Clausen, Hans Jacob · Inventors: Clausen, Hans Jacob
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In natural substrate or fertilizer material such as sphagnum, coir dust or poultry manure seeds and other impurities can occur which can be neutralized by heat treatment. By the invention is provided a particularly effective treatment in that the material after passage of a flow-through kiln (8) is led further to a heat insulated tunnel (38), such that the period of heat treatment can be prolonged essentially without additional energy consumption and the material flow is led through a transportation system substantially closed in relation to the surroundings and, which comprises a cooling zone (42) in which the material is, cooled by blow-through with filtrated air an admixing, station (12) …
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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 15, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2012.
- 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.