Patent · US Expired

Powder composition for the preparation of an opaque dental porcelain in the form of a paste

US5679144A · kind A · utility

12Cited by

2References

15Claims

0Family size

Assignee

Vita Zahnfabrik H. Rauter GmbH · DE

Inventors

Norbert Thiel · Annaberg-Buchholz, DE
Kerstin Herbst · Bensheim, DE

Key dates

Filing date	Jun 7, 1996
Grant date	Oct 21, 1997
Priority date	—
Expiry date	Jun 7, 2016

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K6/898
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A powder composition for the preparation of an opaque dental porcelain, containing as its components PA1 one or more feldspar frits consisting of a number of feldspar frits of different chemical compositions and different physical properties; PA1 CeO.sub.2 as the opacifier, optionally additional opacifiers; and PA1 optionally pigments.

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