Patent EP0304295A1 successfully refreshed from Google Patents.
EP0304295A1
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Electrokinetic analysis method and apparatus employing heat removal
Assignee: Leland Stanford Junior University
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Filing: 1988-08-18
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Granted: —
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Expires: 2008-08-18
Abstract
Abstract A method and apparatus carry out electrokinetic separations with improved efficiency by removing heat from the electrokinetic separation zone. A capillary column (30) is surrounded by a jacket (61) in which coolant water (60) is circulated.
Inventors
- 👤 Richard N. Zare
- 👤 Philippe Gozel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 10:12
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704; G01N27/44708; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N30/30; G01N30/50; G01N30/52; G01N30/54; G01N30/04; G01N30/16; G01N2030/162; G01N2030/285
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
37 words
A process for electrokinetic separation of species in a conductive fluid in an open ended capillary column, characterised in removing heat from the column during the separation so as to maintain the temperature at a constant level.
Claim 2
Dependent Claim
37 words
A process for electrokinetic separation of species in a conductive fluid in an open ended capillary column, characterised in removing heat from the column during the separation so as to maintain the temperature at a constant level.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the temperature is maintained at a temperature of from about 0°C to about 50°C.
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein the temperature is maintained at a temperature of from about 15°C to about 35°C.
Claim 5
Dependent Claim
31 words
A separation apparatus for use in electrokinetic separations comprising a capillary column (30) in contact over a substantial fraction of its length with means (60) for removing heat from the column.
Claim 6
Dependent Claim
31 words
A separation apparatus for use in electrokinetic separations comprising a capillary column (30) in contact over a substantial fraction of its length with means (60) for removing heat from the column.
Claim 7
Dependent Claim
23 words
The separation apparatus according to claim 4 wherein the capillary column has an inside diameter of from about 75 to about 500 microns.
Claim 8
Dependent Claim
27 words
The separation apparatus of claim 5 wherein the capillary column is coiled over a substantial portion of that portion of its length from which heat is removed.
Claim 9
Dependent Claim
29 words
The process or apparatus according to any one of the preceding claims wherein the heat removal is carried out by directly contacting the column with a circulating cooling fluid.
Claim 10
Dependent Claim
28 words
The process or apparatus according to any one of claims 1-6 wherein the heat removal is carried out by indirectly contacting the column with a circulating cooling fluid.
Claim 11
Dependent Claim
19 words
The process or apparatus according to any one of the preceding claims wherein the cooling fluid is a liquid.
Claim 12
Dependent Claim
18 words
The process or apparatus according to any one of the preceding claims wherein the cooling fluid is water.
Claim 13
Dependent Claim
19 words
The process or apparatus according to any one of the preceding claims wherein the cooling fluid is a gas.
Claim 14
Dependent Claim
14 words
The process or apparatus according to claim 11 wherein the cooling fluid is air.
References Cited (Backward Citations)
EP0035878A2
Cited
US4675300A
Cited
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