ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,149, issued on May 6, was assigned to Elekta Ltd. (Crawley, Great Britain).

"Radiofrequency window" was invented by Ian Shinton (Crawley, Great Britain) and Emma Wooldridge (Crawley, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an RF window. The RF window comprises a first and a second cavity and a plate of dielectric material positioned there between. At least one of the first and second cavities comprises a taper, beginning at the plate, such that the at least one of the first and second cavities reduces in diameter in a direction away from the plate."

The patent was filed on May 29, 2020, under Application No. 17/595...