ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,697, issued on May 6.
"Process control for atmospheric plasma treatment of surfaces" was invented by Steven R. Walther (Andover, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a system and method for delivering reactive species from a plasma to a treatment area by scanning a linear array of stacked plasma elements across the treatment area. Reactive species output from each plasma element is calibrated, and during scanning each plasma element is modulated with a uniformity modulation and a dose modulation, enabling a predetermined contour dose distribution of reactive species to be delivered to the treatment area."
The patent was...