US Patent Issued to Ushio Denki on Oct. 28 for "Optical filter used in a microbe inactivation processing device" (Japanese Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,791, issued on Oct. 28, was assigned to Ushio Denki K.K. (Tokyo).

"Optical filter used in a microbe inactivation processing device" was invented by Tatsushi Igarashi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical filter which is used in an inactivation processing device that performs inactivation processing on a processing target microorganism. The optical filter, when discharge light from a light source in which the center wavelength of the discharge light is between 190 nm and 237 nm is incident at an incident angle 0deg, transmits at least a portion of the ultraviolet ray equal to or greater than 190 nm and equal to or less than...