ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,183, issued on May 27, was assigned to WUHU MIDEA SMART KITCHEN APPLIANCE MANUFACTURING Co. LTD. (Wuhu, China).
"Controller for electromagnetic valve, water treatment device and gas cooker" was invented by Shanyu Zhang (Wuhu, China), Guanghua Li (Wuhu, China) and Feng Chen (Wuhu, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A controller for an electromagnetic valve includes a control circuit, a hysteresis circuit, and a driver circuit. An output end of the control circuit is configured to output a first wave signal of a first frequency. An input end of the hysteresis circuit is connected to the output end of the control circuit. The hysteres...