Particle separation
CA 1265264 C · Owner: Cargo Fleet Chemical Co. Limited · Inventors: Robson, James A.; O'Neill, Derek; Pugh, Leonard K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improvements Relating to Particle Separation The present invention provides a blended preparation for the separation especially of coal particles from the tailings which are contained in the fines produced in coal mining. The blended preparation is used instead of or in addition to the conventional froth oil. The blended preparation comprises froth oil. flocculating agent. emulsifying agent. water and optionally. anti-freeze. The use of the preparation results in faster separation and saving in flocculating agent.
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 January 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 2007.
- 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.