ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,467, issued on July 15, was assigned to HELLA GMBH & Co. KGAA (Lippstadt, Germany).
"Method for detecting liquid on a windowpane" was invented by Thomas Niemann (Delmenhorst, Germany), Dirk Jegminat (Bremen, Germany) and Oliver Wilhelm (Stuhr, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for detecting liquid on a windowpane in which radiation is emitted by at least one radiation emitter, the radiation is coupled into the windowpane via at least one optical element, and, after reflection in the windowpane, the radiation is coupled out of the windowpane. The radiation which is coupled out of the windowpane is captured in single meas...