ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,723, issued on Sept. 9, was assigned to SHANGHAI UNITED IMAGING HEALTHCARE Co. LTD. (Shanghai).

"Radiotherapy device and microwave source thereof" was invented by Cheng Ni (Shanghai), Gang Pan (Shanghai), Zhangfan Deng (Shanghai), Mingyuan Song (Shanghai), Zongrui Sun (Shanghai), Haoshan Zhu (Shanghai), Feichao Fu (Shanghai), Jincheng Mei (Shanghai), Chengjia Yuan (Shanghai), Li Wang (Shanghai), Xiaofeng Zhang (Shanghai) and Jianxiong Zou (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure is related to a microwave source. The microwave source may include a cathode heater and a thermionic emitter. The cathode heater may ...