ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,395, issued on May 27, was assigned to LEOTEK Corp. (Taipei, Taiwan).
"Traffic signal lamp, traffic signal system and lamp-state detection method using the same" was invented by Kuang-Yao Liao (Taipei, Taiwan), Wei-Ting Wu (Taipei, Taiwan) and Jhao-Tian Pan (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A traffic signal lamp includes a plurality of light-emitting devices. Each light-emitting device includes a light-emitting element, a power distribution module, a power module, a controller and a measuring element. The power module is configured for converting an alternating current (AC) into a direct current (DC) and supplying the DC...