Inventor

LEVEQUE ALAIN

FR21 patents

⚠️ This page may combine multiple inventors who share the name “LEVEQUE ALAIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEVEQUE ALAIN

RHONE POULENC IND

Process for liquid/liquid extraction of gallium

Liquid/liquid extraction of gallium values from basic aqueous solutions thereof

Liquid/liquid extraction of gallium values from highly basic aqueous solutions thereof

Method of recovering gallium from very basic solutions by liquid/liquid extraction

Purification of solutions of gallium values by liquid/liquid extraction

Process for the separating of rare earths

Process for the purification of an impure phosphoric acid

Recovery of gallium/rare earth values from oxide mixtures thereof

Purification of solutions of gallium values by serial ion exchange-liquid/liquid extraction

Purification of solutions of gallium values by liquid/liquid extraction

Reductive stripping of uranium values from wet-process phosphoric acid

RHONE POULENC CHIMIE

Recovery of neodymium/didymium values from bastnaesite ores

Thorium phosphates prepared by insolubilization of soluble thorium compounds

Liquid/liquid extraction of rare earth/cobalt values

Liquid/liquid extraction of rare earth/cobalt values

Reducing the radium radioactivity of aqueous effluents

RHONE POULENC SPEC CHIM

Liquid-liquid extraction of rare earth/uranium/thorium values

SALOMON & FILS F

Slipper for a ski boot, and process for its manufacture

RHONE POULENC SA

Liquid/liquid extraction of acidic aqueous streams comprising sulfate/titanium/iron values

DU PONT

Mixing apparatus

FRANCE TELECOM

Terminal device for a bi-directional radio relay link