Intimate mixture of calcium and phosphate sources as precursor to hydroxyapatite
US5178845A · kind A · utility
81Cited by
1References
10Claims
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Key dates
| Filing date | Jul 2, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Jul 2, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00293
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel compositions are provided for the production of hydroxyapatite, where a dry mixture is provided which combines a calcium source and an acidic phosphate source, particularly monocalcium phosphate monohydrate or orthophosphoric acid crystals. These two are combined, optionally with other ingredients, with mechanical mixing, resulting in partial reaction or intimate combination to produce a product which requires less water for formation of a desired viscosity, has enhanced mechanical properties and is physiologically acceptable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.