Method and apparatus for processing manure
CA 2066466 A1 · Owner: Ecotechniek B.V. · Inventors: Koster, Iman Willem; Klapwijk, Abraham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for processing manure liquid, manure and/or Kjeldahl-N containing waste water being subjected to a nitrification in an aerated reactor containing active sludge and to a denitrification in a high rate recirculation denitrification reactor (13) containing a very compact biomass capable of converting nitrate to nitrogen gas. The loading of the nitrification reactor (9) being controlled to obtain an optimal nitrification and denitrification the, effluent from the nitrification reactor (9) partially being passed to the recirculation denitrification reactor (13) adding a source of carbon to, the effluent to be passed to the recirculation denitrification 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 April 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2014.
- 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.