ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,907, issued on Jan. 13, was assigned to Saint-Gobain Placo (Courbevoie, France).
"Apparatus and method for the production of a plaster slurry" was invented by Hamouda Jaffel (Vajours, France), Richard Morlat (Vajours, France) and Andrea Ranzani Da Costa (Vajours, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus (100) for the production of a plaster slurry is described, the apparatus (100) comprising a mixer (102) for mixing at least plaster and water to form a plaster slurry, the mixer (102) comprising an outlet conduit (122), a foam generator (106) for mixing at least air, a foaming agent and water to produce a foam, the foam gene...