ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,559, issued on Sept. 30, was assigned to McMillan-McGee Corp (Calgary, Canada).
"Electromagnetic induction heater" was invented by Shiella Delos Reyes (Calgary, Canada), Bruce C. W. McGee (Canmore, Canada), David Nyarko (Calgary, Canada) and Edwin Walter Reid (Airdrie, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heating device for heating underground soil comprising a work-coil housed in a conductive casing, wherein when at least one driving current is supplied to the work-coil, whereby the work-coil generates at least one magnetic field that induces at least one induced current in the casing. The driving currents are of a frequency suf...