Diamond tool, synthetic single crystal diamond and method of synthesizing single crystal diamond, and diamond jewelry
US7404399B2 · kind B2 · utility
3Cited by
4References
27Claims
0Family size
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Key dates
| Filing date | Oct 8, 2004 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Feb 21, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23B2240/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Various types of diamond tools are provided by utilizing the fact that a synthetic single crystal diamond for use in a tool having a nitrogen content of 3 ppm or less exhibits an enhanced hardness in a (100) plane in a <111> direction and simultaneously the reduction in defects. The above synthetic single crystal diamond is synthesized by the temperature difference method under an ultra high pressure at high temperature and contains, in its crystals, nickel introduced by atomic substitution or boron and nickel introduced by atomic substitution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.