Sol-gel calcium phosphate ceramic coatings and method of making same
US6426114B1 · kind B1 · utility
75Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | May 2, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C18/1254
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention relates to novel sol-gel calcium phosphate, in particular hydroxyapatite ceramic coatings and processes of making same at low temperature. Such coatings are useful, inter alia, for dental implants and bone-metal contact appliances. A sol-gel process for preparing a crystallized hydroxyapatite which comprises: (a) hydrolysing a phosphor precursor in a water based medium; (b) adding a calcium salt precursor to the medium after the phosphite has been hydrolysed to obtain a hydroxyapatite gel; and (c) calcining the crystallized hydroxyapatite at a suitable elevated temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.