Treatment of refuse
CA 1059245 A · Owner: Helvisol Ag · Inventors: Dreer, Gottfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for producing filling materials from refuse, comprising crushing the refuse magnetical-, ly removing iron, adding a clarifying slurry or water fraction-, ating the mixture into constituents of varying sizes and fermenting the mixture whilst supplying oxygen thereby to produce a compost, mixing the compost And a solvent in a ratio of 1 to 2 to 1 to 4 with heating and agitation allowing the resultant, mixture to mature and subsequently evaporating the solvent so as to dry the mixture, and mixing the dry mixture with 2-3 chloro-paraffin and 1-3% antimony tridioxide with heating so as to produce a dry filler material. The filling material is useful for …
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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
- Granted July 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 24, 1996.
- 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.