ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,922, issued on May 5, was assigned to UNIVERSITY OF MARYLAND, COLLEGE PARK (College Park, Md.) and THE TRUSTEES OF PRINCETON UNIVERSITY (Princeton, N.J.).

"Volumetric plasmas, and systems and methods for generation and use thereof" was invented by Liangbing Hu (Woodbridge, Conn.), Hua Xie (Hyattsville, Md.), Yiguang Ju (Princeton, N.J.), Qian Zhang (Greenbelt, Md.) and Ji-Cheng Zhao (Dublin, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "A volumetric plasma can be generated between first and second electrodes. The first and second electrodes can be spaced from each other by a gap. The first electrode can comprise a first base layer and a pluralit...