ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,761, issued on April 22.
"Birthday candle with automatic lighting effect" was invented by Liwei Huang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A birthday candle with an automatic lighting effect mainly includes a candle body, a wick connected to the candle body with an end protruding outside an upper end of the candle body, a light sensor configured in the candle body at a position close to the wick and configured for detecting light generated by the wick when the wick burns, a light source, and a control circuit board electrically connected with the light sensor and the light source. The control circuit board is used for contr...