ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,758, issued on March 24, was assigned to Advanced Energy Industries Inc. (Denver).

"Power delivery to a plasma via inductive coupling" was invented by Randy Heckman (Fort Collins, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power delivery system comprising a voltage source, an amplifier coupled to a first node and the voltage source, the amplifier comprising a reactive network configured to form a resonant circuit when the first node is coupled to a coil. The power delivery system also comprises an impedance coupled to a second node and a controller configured to control power to the first node by varying the voltage source and control p...