US Patent Issued to GC on June 16 for "Method of producing block for dental prostheses, and method of producing dental prosthesis" (Japanese Inventor)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,653,653, issued on June 16, was assigned to GC Corp. (Shizuoka, Japan).

"Method of producing block for dental prostheses, and method of producing dental prosthesis" was invented by Katsuhito Kato (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Included is a step of exposing a glass blank at a temperature lower than the temperature at which crystals of lithium metasilicate are generated, to an atmosphere at a temperature equal to or higher than the temperature at which crystals of lithium disilicate are generated and lower than the melting point of the crystals of lithium disilicate, to heat the glass blank so that the main crystalline phase of the...