Patent · US Expired

Process for producing ceramic heating elements

US5560851A · kind A · utility

34Cited by

12References

15Claims

0Family size

Assignee

Hoechst Ceramtec AG · DE

Inventors

Alfred Thimm · Wunsiedel, DE
Heinz Groschwitz · Marktredwitz, DE
Peter Besold · Waldershof, DE

Key dates

Filing date	Nov 9, 1994
Grant date	Oct 1, 1996
Priority date	—
Expiry date	Nov 9, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH05B3/283
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A process for producing an electric heating element is disclosed whereby metallic heating conductors are embedded between ceramic insulating layers, and, as power supply leads and power outlet leads, contact recesses in the ceramic insulating layers are filled with an electrically conductive composition. The heating conductors, the power supply leads and the power outlet leads are applied to the ceramic layers in the green state as metallizing paste containing from 60 to 95% by weight of metal particles and from 5 to 40% by weight of inorganic powder, based on the total solids content of the paste. The ceramic layers with the applied metallizing pastes are then stacked on top of one another and then sintered.

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