US Patent Issued to NCX on April 15 for "Field emission cathode device and method for forming a field emission cathode device" (North Carolina Inventor)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,078, issued on April 15, was assigned to NCX Corp. (Raleigh, N.C.).

"Field emission cathode device and method for forming a field emission cathode device" was invented by Jian Zhang (Durham, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A field emission cathode device comprises a field emission cathode including a cylindrical substrate and a field emission material deposited on a cylindrical surface thereof. The field emission cathode defines a longitudinal axis. A solenoid extends concentrically about the cylindrical surface, and defines a gap therebetween. The solenoid defines opposed open ends perpendicular to the longitudinal axis. A curren...