ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,580, issued on May 19, was assigned to GUANGZHOU TERMBRAY ELECTRONICS TECH Co. LTD. (Guangzhou, China).
"Method for analyzing quality of thin surface layer of PCB" was invented by Jian Zheng (Guangzhou, China) and Guojin Luo (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for analyzing the quality of a thin layer surface of PCB includes steps of taking a region to be tested from the PCB as a sample by scissors or an automatic sampler; performing gold spraying treatment; fixing a sample to be tested onto a metal sample platform, and then mounting the sample platform on the inclined surface of a test platform; depositing a fir...