ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,906, issued on Aug. 11, was assigned to KENNAMETAL INC. (Latrobe, Pa.).
"Evaporation boat" was invented by Alexander Draken (Schongau, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an evaporation boat comprising an evaporator body, wherein the evaporator body comprises an evaporator surface which extends along a longitudinal direction of the evaporator body. The evaporator surface has a pyramidally structured surface which can be created by mechanically machining the evaporator surface in two mutually perpendicular machining directions. The pyramidally structured surface comprises a plurality of structural elements ...