US Patent Issued to YEJ Glass, YEK Glass on Nov. 11 for "Low melting point tin phosphate-based glass frit" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,764, issued on Nov. 11, was assigned to YEJ Glass Co. Ltd. (Kagoshima, Japan) and YEK Glass Co. Ltd. (Gyeonggi-Do, South Korea).

"Low melting point tin phosphate-based glass frit" was invented by Hiroshi Yoshinaga (Kagoshima, Japan) and Yoshinari Takao (Kagoshima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A low melting point tin phosphate-based glass frit contains, in mol %, 15-75% of SnO, 0-40% of SnF2, 10-50% of P2O5, 0-30% of ZnO, 0-5% of Al2O3, 0-30% of B2O3, 0-5% of In2O3, 0-5% of BaO, and 0-5% of SiO2, does not contain Pb, and exhibits a temperature difference of 50deg C. or less between the glass transition point to the glass softe...