ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,469,945, issued on Nov. 11, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Dielectric waveguide line" was invented by Hiroyuki Yoshimoto (Osaka, Japan), Katsusada Tokuhira (Osaka, Japan) and Taku Yamanaka (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dielectric waveguide including: a center dielectric A1; a dielectric layer A2 surrounding the center dielectric A1; and a dielectric layer A3 surrounding the dielectric layer A2, the center dielectric A1 including polytetrafluoroethylene, the center dielectric A1, the dielectric layer A2, and the dielectric layer A3 having relative permittivities at 25deg C. and 6 GHz represented b...