Biofiltering system for treating wastewater effluent
CA 2314689 C · Owner: Belhumeur, Albert · Inventors: Belhumeur, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biofiltering system for treating wastewater effluent for dissipation through an effluent absorption area and into earth beneath the effluent absorption area is disclosed. The biofiltering system comprises a bed of peat overlying the effluent absorption area the peat defining a , biofiltering, medium having a predetermined biofiltering capacity and a fluid flow, regulating unit for allowing the wastewater effluent to be treated to flow at a, flow rate greater than the biofiltering capacity of the peat while not , exceeding, a predetermined threshold value. The system further includes a predetermined number of spaced-apart, elongated distribution conduits arranged over the bed of peat and …
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 July 28, 2000 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2022.
- 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.