ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,903, issued on April 15, was assigned to HOCHIKI Corp. (Tokyo).
"Fire detection apparatus" was invented by Yasuharu Fujiwara (Tokyo), Isao Saeki (Tokyo) and Hideki Takano (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fire detection apparatus 1A includes a heat detection unit 110A provided such that a part of the heat detection unit 110A is accommodated in an outer cover 20A and another part of the heat detection unit 110A is exposed to an outside of the fire detection apparatus 1A through an insertion hole 120A formed in a top surface portion 22A, and a guard portion 130A which is provided to cover a periphery of the insertion hole 120A and...