ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,446, issued on Feb. 24, was assigned to SHINKO ELECTRIC INDUSTRIES Co. LTD. (Nagano, Japan).
"Waveguide substrate and method of making waveguide substrate" was invented by Hiroshi Taneda (Nagano, Japan), Yoko Nakabayashi (Nagano, Japan), Noriyoshi Shimizu (Nagano, Japan), Noritaka Katagiri (Nagano, Japan) and Tatsuki Sumi (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A waveguide substrate includes a core substrate through which first through holes and second through holes are formed, a first conductive layer covering an inner wall of the first through holes and both sides of the core substrate, a second conductive layer covering an i...