Sludge treatment or dewatering process
CA 1186822 A · Owner: Cosden Technology, Inc. · Inventors: Prejean, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, To separate solid and liquids contained in aqueous dispersions of solids which, may also be oil-bearing, a flocculating agent is added to the dispersion while flowing through a pipe, the flowing aqueous dispersion then subjected to a flow restriction to mix the flocculating agent and flocculate the solids and the thus treated dispersion discharged onto a surface permitting free liquid run-off and deposition of the floc. The process is particularly applicable to oil-bearing waste water sludges and waste oil sludges. The process facilitates recovery of the oil and land forming of the solids.
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
- Granted May 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2002.
- 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.