US Patent Issued to ENVISICS on April 8 for "Waveguide with four gradient coating" (British Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,995, issued on April 8, was assigned to ENVISICS LTD (Milton Keynes, Great Britain).

"Waveguide with four gradient coating" was invented by Yiren Xia (Milton Keynes, Great Britain) and Timothy Smeeton (Milton Keynes, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A waveguide includes a pair of complementary surfaces arranged to provide waveguiding therebetween. A first surface of the pair of complementary surfaces includes a plurality of first layers and a plurality of second layers. Each first layer includes a first dielectric. Each second layer includes a second dielectric. Each first and second layer has a first end and a second end...