Removal of contaminants from biological products
US6478967B1 · kind B1 · utility
3Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Dec 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to methods for separating biological contaminants (viruses, nucleic acids and/or endotoxins) from biological products, or for reducing the content of such biological contaminants in said biological products. The sample (biological product) to be purified is treated with an anion exchanger membrane. Said anion exchanger membrane is obtained by reacting a polyamide with an aminoreactive compound which is capable of polymerisation. This is followed by polymerisation with monomers which contain cationic groups or into which cationic groups can be introduced in a reaction analogous to polymerisation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.