Patent US3759816A successfully refreshed from Google Patents.
US3759816A
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Detection in chromatography
Assignee: Individual
•
Filing: 1971-12-14
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Granted: 1973-09-18
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Expires: 1991-12-14
Abstract
Abstract THE PROCESS OF A CHROMATOGRAPHIC SEPARATION IS MONITORED AT ANY DESIRED LOCALITY OF THE CHROMATOGRAPHIC SYSTEM BY OBSERVING AT A SOLID DETECTION ELECTRODE WITH REFERENCE TO A REFERENCE ELECTRODE ANY DETECTABLE CONSTITUTION AND CONCENTRATION DEPENDENT ELECTRICAL QUANITY, E.G. CONDUCTIVITY, ELECTROLYTIC CURRENT CAPACITANCE, ZETAPHENOMENA OR A COMBINATION OF SUPERIMPOSED QUANTITIES.
Inventors
- 👤 V Pretorius
- 👤 H Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:55
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/08; B01D11/00; B01D11/02; B01D11/04; B01D53/00; B01D53/14; B01D53/18; G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/416; G01N27/447; G01N30/00; G01N30/02; G01N30/04; G01N30/06; G01N30/26; G01N30/28; G01N30/34; G01N30/38; G01N30/50; G01N30/56; G01N30/62; G01N30/64; G01N30/84; G01N2030/387; G01N2030/626; G01N2030/645; G01N30/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |