Patent · US Active

Zirconia layered body

US11964916B2 · kind B2 · utility

0Cited by

4References

19Claims

0Family size

Assignee

TOSOH CORPORATION · CN

Inventors

Yuki USHIO · Yamaguchi, JP
Akiko Ito · Machida, JP
Sho AZECHI · Yamaguchi, JP
Hiroyuki Fujisaki · Yamaguchi, JP

Key dates

Filing date	Nov 30, 2022
Grant date	Apr 23, 2024
Priority date	—
Expiry date	Nov 30, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2237/66
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A layered body, which has a change in texture derived from zirconia, particularly a change in translucency and is suitable as a dental prosthetic member, a precursor thereof, or a method for producing these. The layered body has a structure in which two or more layers containing zirconia containing a stabilizer are layered, the layered body including at least: a first layer containing zirconia having a stabilizer content of higher than or equal to 4 mol %; and a second layer containing zirconia having a stabilizer content different from that of the zirconia contained in the first layer. At least one layer contains one or more elements capable of coloring zirconia.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.