Patent · US Expired

Multistage mixer-settler centrifuge

US4857187A · kind A · utility

20Cited by

11References

7Claims

0Family size

Assignee

The Government of the U.S. as represented by the Secretary of the Department of Health and Human Services · US

Inventor

Yoichiro Ito · Bethesda, US

Key dates

Filing date	Sep 28, 1987
Grant date	Aug 15, 1989
Priority date	—
Expiry date	Sep 28, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG01N2030/381
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and apparatus for chromatography employ a vibration driven mixing device mounted inside a column. One end of the mixing device is held in place by a stopper while the other end is free to vibrate back and forth. The mixture at the free end is efficiently mixed while the mixture at the held end remains undisturbed. The undisturbed portion can then be removed. This invention is particularly applicable to centrifugal chromatography where the vibration is produced by high frequency oscillation in the centrifugal force field.

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