Patent · US Expired

Chromatography column

US4280905A · kind A · utility

34Cited by

2References

8Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Werner Gunkel · Roßdorf, DE
Friedhelm Eisenbeiss · Griesheim, DE

Key dates

Filing date	Jul 29, 1980
Grant date	Jul 28, 1981
Priority date	—
Expiry date	Jul 29, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG01N30/6052
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A chromatography column adapted for high pressure chromatography is characterized by a tubular membrane separating a glass tube from the pressurized area between the glass tube and a pressure tube adapted to receive a pressurizing fluid. Changing of the glass tube is facilitated by annular seals at each end of the glass tube against which an adjustable threaded plug, fitted in one of a pair of screw caps fitted on each end of the pressure tube, exerts sealing pressure.

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