Apparatus and process to separate and remove extraneous matter from a liquid stream
CA 2001216 A1 · Owner: Keeter, Kathy L. · Inventors: Keeter, Thomas L.; Keeter, Kathy L.; Keeter, Kathy L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Waste water contaminents are treated and/or removed in a process and a separator that incorporates a hydrocyclone a constrictive collection, passageway for lighter materials to be removed from the water by a skimmer and skimmer ramp that effectively entrap and remove floatable contaminents while clarified water is removed from the separator at a point in the lower portion of the separator below the hydrocyclone after being aerated with recycled and aerated clarified water above the removal level in the separator vessel.
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 October 23, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2011.
- 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.