Granular magnetite particles and process for producing the same
US5578375A · kind A · utility
3Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Sep 27, 1994 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Sep 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2995
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Granular magnetite particles useful as coloring pigments assuming a black color and containing elemental aluminum, 3 to 6 wt %, in the magnetite crystal lattice. The magnetite has a spinel structure with a lattice constant of 8.340 to 8.375 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.