Alloy and product made therefrom
US4765837A · kind A · utility
Inventor
Key dates
| Filing date | Feb 2, 1987 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Feb 2, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C23/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A pellet or bolus for administration to a ruminant by deposition in its rumeno-reticular sac where it is eroded away by rumen juices and releases active agent(s) and/or components, either continuously or in pulsed doses, comprises or incorporates a magnesium-based alloy which comprises at least 40% of magnesium, at least 30% zinc and up to 20% aluminium and, optionally, copper up to 5%, and trace elements, selected from cobalt, manganese, nickel and selenium up to 1%, the percentages being by weight. A paste can be made by heating the alloy to between its solidus and liquidus points, when it can be admixed with lead shot for weighting the bolus. In the illustrated case, the bolus comprises tubular sheath 14 which contains alloy/iron shot filling 16. However, the alloy can be used for any appropriate component of the bolus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.