Calcium phosphate particles and hydraulic cements based thereon
US8287641B2 · kind B2 · utility
2Cited by
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39Claims
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Key dates
| Filing date | May 2, 2008 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Oct 24, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Calcium phosphate particles having A) a specific surface area (SSA) larger than 0.1 m2/g; B) a mean diameter smaller than 5 mm; C) a Ca/P molar ratio superior to 0.95; and wherein D) said particles have been subjected as a last processing step to a heat treatment at a temperature superior to 400° C. for a period of time such that the specific surface area (SSA) of said particles after the heat treatment is not decreased by more than 10% compared to the SSA before said heat treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.