Method for the preservation of viruses and mycoplasma
US6664099B1 · kind B1 · utility
33Cited by
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9Claims
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Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Mar 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/948
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A biologically-active material comprising a live virus or mycoplasma is preserved by a method of desiccation, without lyophilisation, in a matrix of glassy trehalose having a residual moisture content of not greater than 2%. The method comprises two vacuum drying stages. In a cycle time much shorter than a typical freeze drying process a virus or mycoplasma can be preserved to provide a material that can be rehydrated to give a vaccine having potency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.