Patent · US Expired

Method of producing a capillary, a capillary for an electrophoresis device and an electrophoresis device including such a capillary

US6258238A · kind A · utility

1Cited by

7References

10Claims

0Family size

Assignee

AGILENT TECHNOLOGIES, INC. · US

Inventors

Christian Büttner · Pegnitz, DE
Wolfgang D T. Beck · Visp, CH

Key dates

Filing date	Aug 30, 2000
Grant date	Jul 10, 2001
Priority date	—
Expiry date	Aug 30, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01N30/74
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for producing a capillary comprises the steps of providing first a capillary having a uniform inner width throughout its length, introducing then an etchant into the capillary, and producing a temperature gradient over the length of the capillary in such a way that a temperature-controlled increased expansion of the inner width of the capillary will take place during the etching process in the heated region thereof. A capillary produced in this way is excellently suitable for use in an electrophoresis device.

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