ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,490, issued on Oct. 28, was assigned to SHOFU INC. (Kyoto, Japan).
"Sintering method for dental zirconia calcined body" was invented by Kazumichi Nonaka (Kyoto, Japan) and Shuhei Takahashi (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem]A technique for improving translucency in order to prepare a zirconia sintered body having high translucency without using special equipment, has been required.[Solution]To provide A sintering method for a dental zirconia calcined body containing 5.5 mol % to 7.0 mol % of a stabilizer, wherein the method satisfies the following (a) to (c). (a) an average rate of temperature increase in the secti...