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Hadden
Daniel J. Hadden, Aberdeenshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20100262258 | BIOMEDICAL MATERIALS - The present invention provides a process for the preparation of a silicate and carbonate co-substituted calcium phosphate material. The process comprises the steps of: forming a silicon and optionally carbon-containing calcium phosphate precipitate by an aqueous precipitation method involving preparing an aqueous solution comprising phosphate ions, silicate ions, calcium ions and optionally carbonate ions, wherein the ratio of Ca/P and of Ca/(P+Si) in the solution is maintained above approximately 1.67; and heating the precipitate in an atmosphere comprising carbon and oxygen to form a silicate and carbonate co-substituted calcium phosphate material. The present invention also provides a synthetic carbonate and silicate co-substituted hydroxyapatite material, as well as a biomedical material. | 10-14-2010 |
Raymond Anthony Hadden, County Durham GB
| Patent application number | Description | Published |
|---|---|---|
| 20100229466 | OXYGEN REMOVAL - A process for reducing free oxygen in a gaseous nitrogen stream comprises the steps of | 09-16-2010 |
Raymond Anthony Hadden, Durham GB
| Patent application number | Description | Published |
|---|---|---|
| 20090242462 | OXYGEN REMOVAL - A process for reducing free oxygen in a hydrocarbon gas stream comprises the steps of | 10-01-2009 |
| 20100028229 | OXYGEN REMOVAL - A process for reducing free oxygen in a gaseous hydrocarbon stream comprises the step of passing the gaseous hydrocarbon stream over a material comprising a metal selected from Ni, Co, Cu, Fe, Mn or Ag in a reduced state so that oxygen present in said stream reacts with the metal, wherein the metal in the reduced state is formed by, | 02-04-2010 |