ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,998, issued on Sept. 1, was assigned to Nitto Boseki Co. Ltd. (Fukushima, Japan).
"Glass composition for glass fiber, glass fiber, glass fiber fabric, and glass fiber-reinforced resin composition" was invented by Takanobu Hosokawa (Fukushima, Japan), Tadashi Kurita (Fukushima, Japan) and Takashi Nonaka (Fukushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A glass composition includes 59.00 to 65.00% by mass of SiO2, 16.00 to 26.00% by mass of B2O3, 7.00 to 14.00% by mass of Al2O3, 0 to 5.00% by mass of CaO, 0 to 4.00% by mass of MgO, 0 to 6.00% by mass of SrO, 0.10 to 5.00% by mass of TiO2, 0 to 2.00% by mass of F2 and Cl2 in total, less ...