Current-voltage non-linear resistor and method of manufacture thereof
US8535575B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Dec 3, 2009 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Jan 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A current-voltage non-linear resistor (10) comprises a sintered body (20) of a mixture whose chief constituent is zinc oxide and including as auxiliary constituents at least bismuth (Bi), antimony (Sb), manganese (Mn), cobalt (Co) and nickel (Ni). Also, the average grain size of the mixture is no more than 0.4 μm; and the average grain size of the zinc oxide grains in the sintered body (20) is no more than 7.5 μm and the standard deviation based on the grain size distribution of zinc oxide grains in the sintered body (20) is no more than 15% of the average grain size of the zinc oxide grains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.