Process for the valorization of solid wastes, in particular household refuse, and device for its implementation
CA 2045406 A1 · Owner: Biez, Georges · Inventors: Biez, Georges
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 for the valorization of solid wastes, comprising at least 30% by weight of cellulosic materials, in particular household refuse; the said process including the preliminary steps of grinding and sorting the said wastes in order to remove metallic elements from them. The said process consists of thermally treating - in a tubular reactor (13) equipped with an Archimedean screw (24) and heated by the injection of hot combustion gases at its entrance the said reactor, being maintained under a slight partial vacuum - a mixture of a homogeneous mass containing the said shredded wastes and mineral products, the said mixture containing in particular quick …
Read the whole patent
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 November 15, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 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.