Dewatering of mineral suspensions
CA 1104906 A · Owner: Hoechst Aktiengesellschaft · Inventors: Edelmann, Gerhard; Rosenstock, Friedrich; Muller, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for concentrating and dewatering of mineral suspensions by filtration which comprises adding to the suspension prior to the filtration as filter aid a composition containing a sulfosuccinate of the formula I wherein R1 and R2 each are an alkyl radical having about 6 to 12 carbon atoms and Me is an alkali metal and an aliphatic, amine having at least 5 carbon atoms.
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 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 1998.
- 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.