|7247633||Pyrimidine compounds and their use|
A compound of the general formula (I): wherein R1, R2, X, Y and Z are as described in the specification. ...
|5948276||Plastic separation method|
The present invention pertains to the separation of mixtures of plastics, contaminated with, among other things, mineral heavy materials such as e.g. sand or metal refuse. Separation occurs according to density in a separating liquid in the centrifugal fi...
|4975182||Waterflow differential electrical charging process for ores|
The invention consists of forming an aqueous slurry of water and particles of ore carrying both metals and/or minerals which are passed at relatively high speed along an electrically isolated path in contact with electrically insulating materials and in t...