US3696019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thallium alloy electrode
Assignee: American Limnetics Instruments Inc
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Filing: 1970-06-05
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Granted: 1972-10-03
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Expires: 1990-06-05
Abstract
Abstract AN ELECTRODE FOR SENSING DISSOLVED OXYGEN IN AN ELECTROLYTIC MEDIA IS COMPOSED OF A CORE HAVING A MAJOR PORTION OF THALLIUM AND MINOR AMOUNT OF MERCURY AND AN OUTER COATING OF A SATURATED THALLIUM-MERCURY AMALGAM THEREON. THE ELECTRODE CORE IS FORMED AS A SOLID ELECTRODE AND THE PREFERRED AMOUNT OF THALLIUM IS 87% BY WEIGHT WITH THE MERCURY BEING PRESENT IN THE AMOUNT OF 13%. THE ELECTRODE COMPOSITION IS EMPLOYED TO SENSE DISSOLVED OXYGEN IN AN ELECTROLYTIC MEDIA AND IS SUBSTANTIALLY UNAFFECTED BY WIDE VARIATIONS IN TEMPERATURE, PH, PRESSURE, SALINITY AND FLOW RATE.
Inventors
- 👤 James R Arrington
- 👤 Karl Lewis King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:13
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |