Anaerobic digestion apparatus, methods for anaerobic digestion and for minimizing the use of inhibitory polymers in digestion
CA 2448674 C · Owner: Veolia Water Solutions & Technologies Support · Inventors: Lanting, Jelte; Murphy, John L. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention includes an anaerobic solids digestion apparatus (100) comprising a digester (30), at least one draft tube (28) at least one nozzle , (18) and a biogas source (27) a method for digesting a waste stream in an anaerobic solids digestion apparatus comprises feeding a waste stream to a digester (30), reacting the anaerobically biodegradable ma terial in the waste stream with anaerobic bacteria in the digester (30) introducing a mixed , liquor into the digester (30) and mixing the mixed liquor and a method for , minimizing the use of inhibitory polymers by concurrently digesting and concentrating the mixed liquor in the digester (30).
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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 May 31, 2002 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 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
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.