Waste activated sludge anaerobic contact waste stream treatment process
CA 2505047 C · Owner: Carollo Engineers, Inc. · Inventors: Hough, Stephen G.; Narayanan, Balakrishnan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The waste activated sludge anaerobic contact waste stream treatment method and system for treating a waste stream may have an influent waste stream (52) communicated to an anaerobic contact element (12). A waste activated sludge (32) produced from a second influent waste stream process may be introduced into the anaerobic contact element (12) and mixed with the influent waste stream (52) for processing therein. The anaerobic contact element (12) may be maintained for conditions to facilitate the uptake of soluble organic pollutants and to form a fluid having a particulate matter contained therein. The resulting fluid may have the particulate matter separated from the fluid to …
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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 November 12, 2003 and granted April 12, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2025.
- 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.