US Patent Issued to SHIN-ETSU QUARTZ PRODUCTS on Sept. 22 for "Method for evaluating quartz glass crucible, method for manufacturing the same, and quartz glass crucible" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,254, issued on Sept. 22, was assigned to SHIN-ETSU QUARTZ PRODUCTS Co. LTD. (Tokyo).

"Method for evaluating quartz glass crucible, method for manufacturing the same, and quartz glass crucible" was invented by Yu Ishihara (Echizen, Japan), Yuji Baba (Takefu, Japan), Tetsuji Ueda (Echizen, Japan) and Yuya Yokosawa (Koriyama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for evaluating a quartz glass crucible constituted by an outer layer formed of an opaque quartz glass containing a bubble, and an inner layer formed of a transparent quartz glass. The method includes steps of preparing a quartz glass crucible to be evaluated, irradiati...