Process for preparing hepatitis A virus
US4412002A · kind A · utility
2Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2770/32051
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Hepatitis A virus is harvested from persistently infected cells, the cells are then trypsinized, replanted and a second harvest of hepatitis A virus is obtained. The cells can be trypsinized and replanted and harvested indefinitely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.