Patent · US Expired

Thermochromic dental material

US6670436B2 · kind B2 · utility

54Cited by

11References

15Claims

0Family size

Assignee

Ivoclar Vivadent AG · LI

Inventors

Armin Burgath · Stockach, DE
Peter Burtscher · Reutte, AT
Ulrich Salz · Gettorf, DE
Volker Rheinberger · Vaduz, LI

Key dates

Filing date	Feb 6, 2002
Grant date	Dec 30, 2003
Priority date	—
Expiry date	Apr 22, 2022

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K6/30
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to dental materials which contain a thermochromic dye and which display a reversible change of colour in the event of changes in temperature, so that they can be distinguished from the natural dentin.

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