Patent US4014793A successfully refreshed from Google Patents.
US4014793A
Expired / Lapsed
US
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Detecting apparatus for liquid chromatography
Assignee: Czech Academy of Sciences
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Filing: 1975-05-21
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Granted: 1977-03-29
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Expires: 1995-05-21
Abstract
Abstract An improved detection apparatus employable in liquid chromatography for analyzing a selected non-volatile phase of a liquid effluent is described. A vibrating capillary tube is coupled to the effluent source for atomizing the effluent. The atomizer communicates with a first end of a heated separation column, which is in further communication with a carrier gas source. The non-selected components of the effluent are volatilized in the separation column, while the non-volatilized phase is propelled by means of the carrier gas out of the separation column and through a suitable sensor via a control valve such as a diaphragm. The sensed selected phase is thereupon recorded and analyzed in a conventional manner.
Inventors
- 👤 Karel Tesarik
- 👤 Milos Krejci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:15
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/84; G01N2030/8447; G01N2030/847
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
In a liquid chromatography detection apparatus for analyzing a selected non-volatile phase of a liquid effluent, comprising a sensor for the selected phase to be analyzed, conveying means for separating the selected phase from the effluent and for passing the separated selected phase to the sensor and means for introducing effluent into the conveying means, the improvement wherein the conveying means comprises, in combination, means coupled to the effluent source for atomizing the effluent, means including a separating column having a first end communicating with the atomizing means for volatilizing the non-selected components of the atomized effluent, a control valve, and means including a carrier gas source isolated from the introducing means and communicating with the separating column for propelling the non-volatilized selected phase from the separating column to the sensor through the control valve.
Claim 2
Dependent Claim
135 words
In a liquid chromatography detection apparatus for analyzing a selected non-volatile phase of a liquid effluent, comprising a sensor for the selected phase to be analyzed, conveying means for separating the selected phase from the effluent and for passing the separated selected phase to the sensor and means for introducing effluent into the conveying means, the improvement wherein the conveying means comprises, in combination, means coupled to the effluent source for atomizing the effluent, means including a separating column having a first end communicating with the atomizing means for volatilizing the non-selected components of the atomized effluent, a control valve, and means including a carrier gas source isolated from the introducing means and communicating with the separating column for propelling the non-volatilized selected phase from the separating column to the sensor through the control valve.
Claim 3
Dependent Claim
152 words
In a liquid chromatography detection apparatus for analyzing a selected non-volatile phase of a liquid effluent, comprising a sensor for the selected phase to be analyzed, and conveying means for separating the selected phase from the effluent and for passing the separated selected phase to the sensor, the improvement wherein the conveying means comprises, in combination, means coupled to the effluent source for atomizing the effluent, means including a separating column having a first end communicating with the atomizing means for volatilizing the non-selected components of the atomized effluent, means including a carrier gas source communicating with the separating column for propelling the non-volatilized selected phase, and means including a control valve for coupling the propelled selected phase from the separating column to the sensor; and in which the apparatus further comprises means coupled to one end of the separating column for cooling and storing the volatilized nonselected components of the effluent.
Claim 4
Dependent Claim
152 words
In a liquid chromatography detection apparatus for analyzing a selected non-volatile phase of a liquid effluent, comprising a sensor for the selected phase to be analyzed, and conveying means for separating the selected phase from the effluent and for passing the separated selected phase to the sensor, the improvement wherein the conveying means comprises, in combination, means coupled to the effluent source for atomizing the effluent, means including a separating column having a first end communicating with the atomizing means for volatilizing the non-selected components of the atomized effluent, means including a carrier gas source communicating with the separating column for propelling the non-volatilized selected phase, and means including a control valve for coupling the propelled selected phase from the separating column to the sensor; and in which the apparatus further comprises means coupled to one end of the separating column for cooling and storing the volatilized nonselected components of the effluent.
Claim 5
Dependent Claim
41 words
Apparatus as defined in claim 2, in which the propelling means are coupled to the first end of the separating column, and the cooling and storing means are coupled to the end of the separating column opposite to the first end.
Claim 6
Dependent Claim
43 words
Apparatus as defined in claim 2, in which the cooling and storing means is coupled to the first end of the separating column, and in which the propelling means are coupled to the end of the separating column opposite to the first end.
Claim 7
Dependent Claim
141 words
In a liquid chromatography detection apparatus for analyzing a selected non-volatile phase of a liquid effluent, comprising a sensor for the selected phase to be analyzed, and conveying means for separating the selected phase from the effluent and for passing the separated selected phase to the sensor, the improvement wherein the conveying means comprises, in combination, a capellary tube having a first end coupled to the effluent source for atomizing the effluent, means for vibrating the capellary tube, means including a separating column having a first end communicating with the other end of the capellary tube for volatilizing the non-selected components of the atomized effluent, means including a carrier gas source communicating with the separating column for propelling the non-volatilized selected phase, and means including a control valve for coupling the propelled selected phase from the separating column to the sensor.
Claim 8
Dependent Claim
141 words
In a liquid chromatography detection apparatus for analyzing a selected non-volatile phase of a liquid effluent, comprising a sensor for the selected phase to be analyzed, and conveying means for separating the selected phase from the effluent and for passing the separated selected phase to the sensor, the improvement wherein the conveying means comprises, in combination, a capellary tube having a first end coupled to the effluent source for atomizing the effluent, means for vibrating the capellary tube, means including a separating column having a first end communicating with the other end of the capellary tube for volatilizing the non-selected components of the atomized effluent, means including a carrier gas source communicating with the separating column for propelling the non-volatilized selected phase, and means including a control valve for coupling the propelled selected phase from the separating column to the sensor.
References Cited (Backward Citations)
US3463615A
Cited
US3578785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |