US Patent Issued to SHANGHAI ROYE ELECTRIC on March 18 for "Maintenance-free gas density relay and cross-checking method therefor" (Chinese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,032, issued on March 18, was assigned to SHANGHAI ROYE ELECTRIC Co. LTD. (Shanghai).

"Maintenance-free gas density relay and cross-checking method therefor" was invented by Haiyong Jin (Shanghai), Tiexin Xia (Shanghai), Xiaobeng Huang (Shanghai), Zhengcao Guo (Shanghai), Min Chang (Shanghai) and Lele Wang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a maintenance-free gas density relay and a mutual check method therefor. The maintenance-free gas density relay includes a gas density relay body and first gas density detection sensors which are in communication on gas paths, and an intelligent control unit connected to the gas...