Electrically heated substrate with multiple ceramic parts each having different volume resitivities
US6294771A · kind A · utility
8Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2001 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Jan 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49083
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heater comprising a substrate having a heating surface to treat a substance to be heated on the substrate, a heating element embedded in the substrate, and a resistance control part, wherein the substrate comprises a first ceramic material and the resistance control part comprises a second ceramic material which has higher volume resistivity than that of the first ceramics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.