ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,230,977, issued on Feb. 18, was assigned to OMRON Corp. (Kyoto, Japan).

"Contactless power feed apparatus and power transmission method" was invented by Goro Nakao (Kyoto, Japan), Yuki Ito (Kyoto, Japan) and Taichi Mishima (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power reception device 3 includes: an estimation circuit 28 estimating a load resistance of an entire contactless power feed apparatus 1; and a reception-side communicator 27 transmitting an estimated value of the load resistance of the entire contactless power feed apparatus 1 to a power transmission device 2. The power transmission device 2 has a power supply circuit 11 ...