US Patent Issued to GULF SECURITY TECHNOLOGY on Nov. 25 for "Optical filter, and test assembly and method for smoke detector" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,482,346, issued on Nov. 25, was assigned to GULF SECURITY TECHNOLOGY Co. LTD. (Hebei, China).

"Optical filter, and test assembly and method for smoke detector" was invented by Maoqing Yang (Qinhuangdao, China), Jialin Zhang (Qinhuangdao, China) and Dachuan Wang (Qinhuangdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides an optical filter, and a test assembly and method for a smoke detector. The optical filter comprises: a support; and a screen supported by the support, wherein the screen is composed of wires and mesh holes are defined between the wires, and the screen has a first side and a second side opposite to...