ALEXANDRIA, Va., June 9 -- United States Patent no. 12,288,919, issued on April 29, was assigned to United States of America as represented by the Administrator of NASA (Washington).

"Broadband metamaterial termination for planar superconducting transmission line circuits" was invented by Edward J. Wollack (Clarksville, Md.), Rahul Datta (Baltimore), Karwan Rostem (Greenbelt, Md.) and Kevin L. Denis (Crofton, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention minimizes issues with transmission lines through the use of a normal-metal/superconducting meta-material structure realized with controlled impedance sub-wavelength line sections, which effectively concentrate the uncertainty in th...