ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,527,487, issued on Jan. 20, was assigned to Shenzhen Cantianshu Information Technology Co. Ltd. (Shenzhen, China).
"Heart rate detection earphone and earphone device" was invented by Qingliang Chen (Shantou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heart rate detection earphone and an earphone device are provided. The heart rate detection earphone includes an earphone housing and an earphone functional component. The earphone housing includes an ear hook part, a connection part, and an earphone part. One end of the connection part is connected to the ear hook part, and the other end of the connection part is connected to the earphone part....