Supported biofilm apparatus and process
CA 2512759 C · Owner: Zenon Environmental Inc. · Inventors: Towe, Ian Glenn; Pottinger, Ian; Cote, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A membrane supported biofilm reactor uses modules having fine hollow fibres , (19), for example, made from dense wall Poly methylpentene (PMP) used in tows or formed into a fabric (26). In one module one or more sheets of the fabric , are potted into a module to enable oxygen containing gas to be supplied to the lumens of the hollow fibres. Various reactors and processes for example to , treat wastewater, using such modules are described. Mechanical chemical and , biological methods are used to control the thickness of the biofilm (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 February 13, 2004 and granted April 4, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2026.
- 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.