Dewatering solids suspensions
CA 1263770 C · Owner: Water Research Centre · Inventors: Hoyland, Garry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Solids suspensions are dewatered by filter plate pressing by adding a flocculant downstream of the filter press pump(s), the pump(s) being of the positive displacement type whereby the amount of flocculant required can be determined from the speed of the pump(s). Apparatus is provided which includes a filter plate press one or, more filter press pumps of the positive displacement type and means for sensing the speed of the pump(s) and for controlling the dose of flocculant in dependence thereon.
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 December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
- 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.