ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,701, issued on July 29, was assigned to Vactronics Technologies Inc. (Miaoli, Taiwan).

"Narrow bandpass filtering element" was invented by Huang-Ming Chang (Miaoli County, Taiwan), Yung-Sheng Cheng (Miaoli County, Taiwan), Tsung-Yen Tsai (Miaoli County, Taiwan) and Sen-Tsung Hsiao (Miaoli County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A narrow bandpass filtering element includes a substrate, a bandpass filtering structure and an anti-reflection structure, and the bandpass filtering structure and anti-reflection structure are formed on two opposite surfaces of the substrate respectively. The bandpass filtering structure includes NbTiOx...