Reactor for the biological treatment of waste water
CA 2129538 A1 · Owner: Vellinga, Sjoerd H. J. · Inventors: Vellinga, Sjoerd H. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reactor for the biological treatment of waste water comprises a reactor vessel (1) intended to receive support material. Biomass is able to adhere to this material. The reactor vessel has an inlet (2) for the water to be treated and an outlet (3) for treated water. A number of module tanks (4) adjoining one another over , which said support material can be distributed are placed in the, reactor vessel. These module tanks can individually be inserted in and removed from the reactor.
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 January 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2015.
- 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.