ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,370, issued on July 29, was assigned to RAYOTEK SCIENTIFIC INC. (San Diego).
"Method for manufacturing a fused metal sight window with a high flow temperature optical material" was invented by William Raggio (Del Mar, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a fused metal sight window that melts the metal of the frame around the window, instead of the traditional method of melting the window into the frame. Since most of the superior optical transparent materials (such as fused silica, sapphire, YAG, ALON, diamond, fused quartz and magnesium fluoride) have a melting point higher than most metals, it was not pr...