ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,770, issued on Feb. 10, was assigned to Exentec U.S. Inc. (Milpitas, Calif.).

"Method and apparatus for cleaning an electrostatic precipitator gas scrubbing apparatus" was invented by Daniel L. Messineo (Fremont, Calif.), Husain Lohawala (Sunnyvale, Calif.) and Mark W. Johnsgard (Aptos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrode for use in an electrostatic precipitator comprising a conductive central portion to which are attached a plurality of conductive disc-shaped elements each having sharp points spaced around its circumference and a plurality of openings near its center. The central portion passes through the centers of ...