Patent US4431919A successfully refreshed from Google Patents.
US4431919A
Expired / Lapsed
US
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Detection apparatus, particularly for use in liquid chromatography
Assignee: US Philips Corp
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Filing: 1981-04-10
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Granted: 1984-02-14
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Expires: 2001-04-10
Abstract
Abstract A detection apparatus of a simple construction is formed from an electro-chemiluminescence cell (12) having connections for the supply and the discharge of a liquid to be examined, particularly a mobile phase coming from the separation column of a liquid chromatograph, a voltage source (11) and a detector (14) for electric current, which are connected to the electrodes (1, 2) of the cell (12). Preferably a radiation-sensitive element (13) is also provided.
Inventors
- 👤 Heiner Kostlin
- 👤 Manfred Peterek
- 👤 Hartwig Schaper
- 👤 Robert J. Dolphin
- 👤 Frederick W. Willmott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/74
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A detection apparatus for use with a liquid chromatography apparatus, characterized in that the detection apparatus comprises an electro-chemiluminescence cell (12) having connections (7) for the supply and discharge of a mobile phase coming from the separation column of a liquid chromatography apparatus, two facing electrodes (1, 2), one of which electrodes is transparent, a voltage source (11) and a detector (14) for electric current connected to the electrodes (1, 2) of the cell.
Claim 2
Dependent Claim
74 words
A detection apparatus for use with a liquid chromatography apparatus, characterized in that the detection apparatus comprises an electro-chemiluminescence cell (12) having connections (7) for the supply and discharge of a mobile phase coming from the separation column of a liquid chromatography apparatus, two facing electrodes (1, 2), one of which electrodes is transparent, a voltage source (11) and a detector (14) for electric current connected to the electrodes (1, 2) of the cell.
Claim 3
Dependent Claim
19 words
A detection apparatus as claimed in claim 1, characterized in that the apparatus further comprises a radiation-sensitive element (13).
Claim 4
Dependent Claim
27 words
A detection apparatus as claimed in claim 2, characterized in that the apparatus comprises means for the spectral selection of the radiation emitted from the electro-chemiluminescence cell.
Claim 5
Dependent Claim
21 words
A detection apparatus as claimed in claim 1 or 2, characterized in that the voltage source is a d.c. voltage source.
Claim 6
Dependent Claim
31 words
A detection apparatus as claimed in claim 4 characterized in that the magnitude of the voltage of the DC source corresponds to the excitation energy of the substance to be detected.
References Cited (Backward Citations)
US3706381A
Cited
US4036704A
Cited
US3961253A
Cited
US4147431A
Cited
US4343767A
Cited
US4280815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |