ALEXANDRIA, Va., July 14 -- United States Patent no. 12,684,452, issued on July 14.

"Cellular radio signal (e.g., 5G millimeter wave) transmission through high energy efficient building materials" was invented by Manoj Kumar Das (Frisco, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method, system, and apparatus for improving the signal strength of millimeter wave signals inside structures received from outside of the structure. In an embodiment, a method includes receiving, at a first receiver external to a barrier, a millimeter wave signal, the millimeter wave signal comprising a wireless transmission protocol. The method also includes converting the millimeter wave signal to an optical or electri...