Installation for biochemichal sewage treatment
CA 2305186 A1 · Owner: Kolesnikov, Vladimir Petrovich · Inventors: Gordeev-Gavrikov, Vladimir Konstantinovich; Kolesnikov, Vladimir Petrovich; Klimukhin, Vladimir Dmitrievich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is designed for the treatment of household and industrial sewage, mainly for the biochemical treatment of high-contaminated sewage produced by those enterprises referred to the food chemical, pharmaceutical , and microbiological industries. The installation contains a primary purification stage biocoagulator (3), a secondary stage biocoagulator (14) whose sediment is introduced into a fermenter (17). Clarified effluent from biocoagulator (14) and fermenter (17) is further introduced into a pump plant (33), whereby effluent is pumped into a biofilter (39) and further into a combined device (44) of the same design as fermenter (17) - irrigation system artificial charge, …
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 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2020.
- 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.