Coagulation-flocculation process
CA 2099472 A1 · Owner: Lartiges, Bruno · Inventors: Suty, Herve; Bottero, Jean-Yves; Lartiges, Bruno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved coagulation-flocculation process is provided which leads to the formation of flocs of greater size and of higher mechanical strength without irreversible formation of microflocs comprising applying at least in the, initial stage of the process an initial operative cycle to a, suspension having aggregate-forming properties and containing a coagulant, said cycle comprising:, (i) a fast agitation step at an average velocity gradient comprised between 300 and 1 000 s-1 for a duration comprised between 30 and 200 sec.; and (ii) a slow agitation step at an average velocity gradient comprised between 40 and 100 s-1, for a time comprised between 5 and 40 min.
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 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2015.
- 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.