US Patent Issued to Korea Research Institute of Standards and Science on June 23 for "Electron gun using virtual source method" (South Korean Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,154, issued on June 23, was assigned to Korea Research Institute of Standards and Science (Daejeon, South Korea).

"Electron gun using virtual source method" was invented by In Yong Park (Daejeon, South Korea), Takashi Ogawa (Daejeon, South Korea), Ha Rim Lee (Seoul, South Korea) and Junhyeok Hwang (Icheon-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an electron gun using a virtual source method that may have a high angular current density, a narrow energy distribution, and stable electron emission characteristics by forming a virtual source inside a thermal electron source (LaB6, CeB6)-based emitter emitting an electron...