ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,772,374, issued on Oct. 20, was assigned to HONGQISHENG PRECISION ELECTRONICS (QINHUANGDAO) Co. LTD. (Hebei Province, China), AVARY HOLDING (SHENZHEN) Co. LTD. (Shenzhen, China) and GARUDA TECHNOLOGY Co. LTD. (New Taipei City, Taiwan).
"Circuit board having a switch and method for fabricating the same" was invented by Cheng-Jia Li (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit board having a switch includes an insulation material layer, first and second insulation layers, a circular channel, a first cover layer, an inert liquid material, a first conductive block, a second conductive block and a conductive layer. The first and ...