Patent · US Expired

Process for the extraction and purification of proteins from culture media producing them

US4683294A · kind A · utility

31Cited by

13References

18Claims

0Family size

Assignee

Smith Kline-RIT, s.a. · BE

Inventors

Frans Van Wijnendaele · Ottenburg, BE
Daniel Gilles · Genval, BE
Guy Simonet · Paris, FR

Key dates

Filing date	Apr 3, 1985
Grant date	Jul 28, 1987
Priority date	—
Expiry date	Apr 3, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S530/806
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

The process is applicable to the supernatant of engineered yeast cells disrupted in the presence of a non-ionic detergent: it comprises the precipitation of contaminants by polyethylene glycol and the treatment cation or, after eventual ultrafiltration, with ammonium sulfate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.