ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,883, issued on Jan. 13, was assigned to Hitachi High-Tech Corp. (Tokyo).

"DC high-voltage source device including plurality of variable DC voltage sources and plurality of switching circuits, and charged particle beam device including the DC high-voltage source device" was invented by Tomoyo Sasaki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A DC high-voltage source device includes a first voltage source including first and second variable DC voltage sources; first and second switching circuits that generate an AC voltage from the DC voltage of the first and second variable DC voltage sources, respectively; a first transformer that transfo...