ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,376,949, issued on Aug. 5, was assigned to Braun GmbH (Kronberg, Germany).
"Bristle driven pulsation" was invented by Karen Lynn Claire-Zimmet (Kronberg, Germany), Niclas Altmann (Niddatal, Germany), Thomas Fritsch (Eppstein, Germany) and Norbert Schaefer (Frankfurt Am Main, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric toothbrush having bristle driven pulsation includes a brush head having a bristle holder and bristle tufts attached to the bristle holder. The bristle tufts and corresponding bristles are disposed at a perpendicular and/or a non-perpendicular angle with respect to a mounting surface of the brush head. The electric too...