Wet grinding of mineral materials
CA 1058595 A · Owner: Imperial Chemical Industries Limited · Inventors: Steel, Margaret L.; Holt, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mineral comminuting process which comprises comminuting a mineral such as metal ores or organic materials of low water solubility such as coal, drugs and fertilizers in the presence of a liquid medium comprising an ionic polysaccharide which is preferably carboxylated. The process results in fluid compositions having improved pumpability or suspension characteristics.
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 July 17, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 17, 1996.
- 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.