US3795589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for electrochemical analysis
Assignee: Individual
•
Filing: 1970-11-30
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Granted: 1974-03-05
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Expires: 1990-11-30
Abstract
Abstract A MEASURING CELL FOR DETERMING THE CONCENTRATION OF A SELECTED COMPONENT (E.G. SO2,CO,NO2,O3,H2O2 OR ETHANOL) IN A MIXTURE. THE CELL INCLUDES AN ELECTRODE COVERED WITH A THIN LAYER OF ELECTROLYTE CONTAINING A REDOX SYSTEM (E.G. CU++FOR SO2 MEASUREMENT) WHICH REACTS WITH THE SELECTED COMPONENT TO FORM AN ELECTROACTIVE SPECIES. AT THE ELECTROACTIVE SPECIES THUS FORMED GAINS OR LOSES ELECTRONS, GIVING A CURRENT WHICH IS MEASURE OF THE CONCENTRATION OF THE SELECTED COMPONENT.
Inventors
- 👤 H Dahms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:30
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; G01N27/4045
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |