Process for the aerobic-thermophilic stabilization and disinfection of sludge
CA 2558524 C · Owner: Fuchs, Martin · Inventors: Fuchs, Leonhard; Fuchs, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the aerobic-thermophilic stabilization and disinfection of sludge, wherein:, a) raw sludge having a dry matter content of from 3 to 7 % by weight is fed to a first stage, where said raw sludge remains during an average retention time of from four to ten days at temperatures of at least 42 °C , with the introduction of an oxygen-containing gas to obtain a partially stabilized sludge;, b) said partially stabilized sludge is fed to a second stage in which said partially stabilized sludge is further stabilized and disinfected for an average retention time which is 30 to 70 % of the average retention time of the first stage at temperatures of above 50 °C with the …
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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 April 21, 2006 and granted November 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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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.