ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,063, issued on Dec. 30, was assigned to DOSATRON INTERNATIONAL (Bordeaux, France).

"Method and pump for low-flow proportional metering" was invented by Thibault Marion (Floirac, France) and Richard Mahieux (Cursan, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A proportional metering method and its associated pump, which includes: a hydraulic machine enclosing a member suitable for performing an alternative movement, supply to the machine at the inlet triggering an alternative translational movement by the member, a volumetric pump, provided with a rotational axis, an inlet intended to be placed in fluid communication with an additive tank, ...