Positive temperature coefficient semiconductor ceramic
US4956320A · kind A · utility
7Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Feb 13, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive temperature coefficient semiconductor ceramic is prepared by adding from 0.2 to 12 mole % of silicon monoxide to a barium titanate family semiconductor ceramic which has been made into a semiconductor by the addition of a trace amount of a semiconductor agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.