ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,608, issued on June 3, was assigned to NIPPON ELECTRIC GLASS Co. LTD. (Shiga, Japan).

"Glass fibers" was invented by Miki Kimura (Shiga, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a glass fiber, which achieves both of a low spinning temperature, and a low dielectric constant and a low dielectric loss tangent. The glass fiber includes as a glass composition, in terms of mass %, 40% to 80% of SiO2, 0% to 20% of Al2O3, and 10% to 30% of B2O3, includes at least one kind selected from MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, ZrO2, Fe2O3, SnO2, F, and Cl, has a total content of MoO3, Cr2O3, Pt, and Rh of from 0.01 ppm to 500 ppm, and has ...