Patent · US Expired

Ceramic cooktop

US6921882B2 · kind B2 · utility

6Cited by

8References

32Claims

0Family size

Assignee

Schott AG · DE

Inventors

Rainer Gadow · Aschau am Inn, DE
Andreas Killinger · Echterdingen, DE
Christian Friedrich · Munich, DE
Chuanfei Li · Stuttgart, DE
Karsten Wermbter · Budenheim, DE

Key dates

Filing date	Aug 25, 2003
Grant date	Jul 26, 2005
Priority date	—
Expiry date	Aug 25, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2993
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a ceramic cooktop comprising a cooking plate (12) made of glass ceramic or glass. The ceramic cooktop also comprises an electrical heat conductor layer (22) and an insulating layer (14) that is located between the cooking plate (12) and the heat conductor layer (22). The insulating layer (14) consists of a plurality of individual layers (16, 18, 20) that each have a porosity that decreases toward the heat conductor layer (22).

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