US3410763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous polarographic method
Assignee: Union Carbide Corp
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Filing: 1963-08-08
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Granted: 1968-11-12
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Expires: 1983-08-08
Abstract
No abstract record available.
Inventors
- 👤 Italo A Capuano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:52
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
A METHOD FOR CONTINUOUS QUALITATIVE AND QUANTITATIVE DETERMINATION OF CONCENTRATION OF A PRESELECTED COMPONENT OF INTEREST OCCURRING IN A MULTICOMPONENT MIXTURE WHICH METHOD COMPRISES THE CONCURRENTLY PERFORMED STEPS OF FORMING AN ELECTROLYTIC SOLUTION CONTAINING IONS OF SAID COMPONENT OF INTEREST; CONTINUOUSLY PASSING SAID ELECTROLYTIC SOLUTION CONTAINING SAID IONS OF SAID COMPONENT OF INTEREST THROUGH A MEASURING CELL PORTION OF A POLAROGRAPHIC ANALYZER, CONTINUALLY DROPPING LIQUID MERCURY DROPS FROM A DROPPING MERCURY ELECTRODE DISPOSED IN THE ELECTROLYTIC SOLUTION PASSING THROUGH SAID MEASURING CELL PORTION OF SAID POLAROGRAPHIC ANALYZER AT A FREQUENCY OF FROM ABOUT 0.1 TO ABOUT 0.4 SECOND; CONTINUOUSLY REMOVING MERCURY AGGREGATING FROM SAID DROPS FROM SAID MEASURING CELL PORTION; CONTINUOUSLY REMOVING IMPURITIES FROM THE MERCURY THUS REMOVED; CONTINUOUSLY RECIRCLAING MERCURY REMOVED FROM SAID MEASURING CELL PORTION AND CLEANSED TO A MERCURY RESERVOIR DISPOSED ABOVE AND CONNECTING TO SAID DROPPING MERCURY ELECTRODE; MAINTAINING APPLIED ELECTRIC VOLTAGE BETWEEN SAID DROPPING MERCURY ELECTRODE AND A REFERENCE ELECTRODE DISPOSED IN A REFERENCE CELL PORTION OF SAID POLAROGRAPHIC ANALYZER; DEVELOPING A CONTINUOUS SIGNAL REPRESENTATIVE OF VOLTAGE-DIFFUSION CURRENT RELATIONSHIP OBTAINING BETWEEN THE DROPPING MERCURY AND THE REFERENCE ELECTRODES; AND TRANSLATING SAID SIGNAL INTO A CONTINUOUS SENSIBLE INDICATION PROPORTIONAL TO AND REPRESENTATIVE OF THE TONIC CONCENTRATION OF THE COMPONENT OF INTEREST IN THE ELECTROLYTIC SOLUTION PASSING THROUGH THE MEASURING CELL PORTION OF SAID POLAROGRAPHIC ANALYZER.
Claim 2
Independent Claim
219 words
A METHOD FOR CONTINUOUS QUALITATIVE AND QUANTITATIVE DETERMINATION OF CONCENTRATION OF A PRESELECTED COMPONENT OF INTEREST OCCURRING IN A MULTICOMPONENT MIXTURE WHICH METHOD COMPRISES THE CONCURRENTLY PERFORMED STEPS OF FORMING AN ELECTROLYTIC SOLUTION CONTAINING IONS OF SAID COMPONENT OF INTEREST; CONTINUOUSLY PASSING SAID ELECTROLYTIC SOLUTION CONTAINING SAID IONS OF SAID COMPONENT OF INTEREST THROUGH A MEASURING CELL PORTION OF A POLAROGRAPHIC ANALYZER, CONTINUALLY DROPPING LIQUID MERCURY DROPS FROM A DROPPING MERCURY ELECTRODE DISPOSED IN THE ELECTROLYTIC SOLUTION PASSING THROUGH SAID MEASURING CELL PORTION OF SAID POLAROGRAPHIC ANALYZER AT A FREQUENCY OF FROM ABOUT 0.1 TO ABOUT 0.4 SECOND; CONTINUOUSLY REMOVING MERCURY AGGREGATING FROM SAID DROPS FROM SAID MEASURING CELL PORTION; CONTINUOUSLY REMOVING IMPURITIES FROM THE MERCURY THUS REMOVED; CONTINUOUSLY RECIRCLAING MERCURY REMOVED FROM SAID MEASURING CELL PORTION AND CLEANSED TO A MERCURY RESERVOIR DISPOSED ABOVE AND CONNECTING TO SAID DROPPING MERCURY ELECTRODE; MAINTAINING APPLIED ELECTRIC VOLTAGE BETWEEN SAID DROPPING MERCURY ELECTRODE AND A REFERENCE ELECTRODE DISPOSED IN A REFERENCE CELL PORTION OF SAID POLAROGRAPHIC ANALYZER; DEVELOPING A CONTINUOUS SIGNAL REPRESENTATIVE OF VOLTAGE-DIFFUSION CURRENT RELATIONSHIP OBTAINING BETWEEN THE DROPPING MERCURY AND THE REFERENCE ELECTRODES; AND TRANSLATING SAID SIGNAL INTO A CONTINUOUS SENSIBLE INDICATION PROPORTIONAL TO AND REPRESENTATIVE OF THE TONIC CONCENTRATION OF THE COMPONENT OF INTEREST IN THE ELECTROLYTIC SOLUTION PASSING THROUGH THE MEASURING CELL PORTION OF SAID POLAROGRAPHIC ANALYZER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |