Process for isolating hepatitis B antigen
US4024243A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Jun 16, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S530/83
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
An improved process for the preparation of hepatitis B antigen by subjecting plasma of hepatitis B donors to isopycanic banding wherein the step gradient is NaBr. Faster and more economical processing is obtained by multiple loading of the step gradient, either NaBr or conventional gradients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.