Alexandria, Jan. 20 -- Diffraction Grating Services has obtained a patent for faceted gemstone with enhanced color dispersion and diminished haze. This invention was developed by Benderly David. The patent application number is 16/112,870. The International Patent Classification codes are A44C 17/00 (20060101) and G02B 5/18 (200..

Seoul, Jan. 18 -- Univ Seoul Ind Coop Found has filed a patent application for green gold alloy for jewelry having low gold content. This invention was developed by Song Oh Sung and Song Jeong Ho. The patent application number is KR20180007864 20180122. The patent publication number is KR20190089411 (A). International Patent ..