A method of and a reactor for removing impurities from a liquid
CA 2126705 C · Owner: Flavio, Magaraggia · Inventors: Flavio, Magaraggia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reactor for, and a method of, removing impurities from a liquid in particular for de-inking, employ a tank within which liquid to be purified is introduced together with a gas or air a, drain for the purified liquid communicating with an outlet of the tank inlets at different, heights of the tank and connected to the purified liquid outlet and to inlets for gas or air and a rotating shaft inside the tank carrying blades at different heights of the tank at which the liquid together with gas or air is introduced the blades having heights progressively increasing towards the lower portion of the tank.
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 June 24, 1994 and granted November 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2016.
- 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.