ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,690, issued on June 3, was assigned to Dr. Brown's Co. (St. Louis).
"Powder dispenser" was invented by Douglas Hanneken (St. Louis) and Bernard J. Kemper (Bonne Terre, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A powder dispenser generally includes a reservoir adapted to contain a powder, a rotor disposed within the reservoir, a plate, and an engagement member. The rotor is configured to rotate about an axis and engage the powder within the reservoir. The plate is positioned below the rotor and defines a slot configured to receive the powder as the rotor rotates about the axis. The plate is arranged to rotate relative about the axis. The enga...