Patent · US Expired

Process for the production of a metallic denture

US4689197A · kind A · utility

20Cited by

5References

22Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Werner Groll · Alzenau, DE
Josef Rothaut · Fort Lee, US
Angela Klaus · Highland Park, US
Rudi Steinke · Hanau, DE

Key dates

Filing date	Apr 4, 1986
Grant date	Aug 25, 1987
Priority date	—
Expiry date	Apr 4, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/12056
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A denture with a metallic microstructure and with low shrinkage and porosity is produced by metallurgical sintering by providing a multimodal size distribution of coarse and fine fractions of metal powder, optionally also with glass or ceramic powder, converting this powder mixture with water into a slip, modelling the denture with this, and sintering the slip at a temperature which exceeds the solidus temperature of at least one component of the powder mixture.

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