Patent · US Active

Dental ceramic article, process for production and use thereof

US8841223B2 · kind B2 · utility

2Cited by

7References

13Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Michael Jahns · Gilching, DE
Gallus Schechner · Herrsching am Ammersee, DE

Key dates

Filing date	Oct 26, 2009
Grant date	Sep 23, 2014
Priority date	—
Expiry date	Oct 26, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2235/9661
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention describes a dental article comprising zirconium oxide and at least two different coloring substances A and B, substance A showing a light emission in the range of about 470 nm to about 510 nm and substance B showing a light absorption in the range from about 520 nm to about 750 nm. The invention also relates to different processes of producing the dental article e.g. by a process comprising a casting step, a pressing step, or an infiltration step and to the use of certain compositions containing either substance A or substance B for producing such a dental article.

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