US Patent Issued to TOSOH on March 17 for "Glass and method for producing the same, and member and apparatus using the same" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,141, issued on March 17, was assigned to TOSOH Corp. (Yamaguchi, Japan).

"Glass and method for producing the same, and member and apparatus using the same" was invented by Masahiro Ito (Kanagawa, Japan) and Kazuyoshi Arai (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for producing a glass that contains no bubbles with diameters of more than 0.1 mm and in which the occupied area fraction of bubbles with diameters of 0.1 mm or less is 0.05% or less, the methods including: placing raw material powders for at least one oxide of Si and a di- or higher-valent metal element in a container, mixing the raw material powders together...