Vitreous enamel resistor and method of making the same
US4286251A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49101
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vitreous enamel resistor, and method of making the same comprising the steps of applying to the surface of a substrate and firing a mixture of glass frit and particles of a precious metal oxide such as iridium oxide, ruthenium oxide, and mixtures thereof. The mixture is fired in a neutral, inert, or reducing atmosphere for a time and at a temperature resulting in a controlled partial dissociation of the oxide and softening of the glass frit. When cooled, a resistor is provided having a glass film with conductive particles therein strongly bonded to the substrate. The resistor produced can be terminated by the use of electroless plating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.