US3785947A
Expired / Lapsed
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Electrode assembly to determine the oxygen content of molten metal
Assignee: Leeds and Northrup Co
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Filing: 1972-05-26
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Granted: 1974-01-15
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Expires: 1992-05-26
Abstract
Abstract An expendable, plug-in electrode assembly for insertion into a bath of molten material to form a galvanic cell comprised of solid state electrolyte connected on one side to a sold state reference electrode and on the other side connected to a connector electrode through a liquid containing a constituent in an amount to be determined. The electrode assembly is characterized by the inclusion of a thermal switch connected across the electrical leads to the electrodes for use in checking the continuity of plug-in electrical connections and a measuring circuit prior to immersing the electrode assembly onto a bath of molten material.
Inventors
- 👤 W Baldwin
- 👤 H Clauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:31
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/417; G01N27/4175
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |