ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,057, issued on Oct. 21, was assigned to FUJIKOKI Corp. (Tokyo).
"Electric valve control device, electric valve device, and method for controlling electric valve" was invented by Hiroshi Hagimoto (Tokyo) and Yusuke Ishizuka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric valve control device inputs pulses to a stepping motor to rotate a rotor in a second direction; inputs pulses to the stepping motor to rotate the rotor in a first direction when the electric valve is in a second-direction-rotation restricted state; obtains the number of pulses (an input number (Xi)) input to the stepping motor from the second-direction-rotation rest...