US2993846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for dissolved oxygen determination
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-04-01
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Granted: 1961-07-25
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Expires: 1979-04-01
Abstract
No abstract record available.
Inventors
- 👤 Carl P Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:59
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR THE DETERMINATION OF DISSOLVED OXYGEN IN AN ELECTROLYTIC LIQUID USING AN INSTRUMENT INCLUDING A DROPPING MERCURY ELECTRODE AND A MERCURY POOL ANODE COMPRISING THE STEPS OF: FILLING THE SPACE BETWEEN THE DROPPING MERCURY ELECTRODE AND THE MERCURY POOL WITH THE LIQUID SO THAT THE LIQUID FORMS PART OF AN ELECTRICAL CIRCUIT, CAUSING DISCRETE DROPLETS OF MERCURY TO FLOW FROM THE DROPPING MERCURY ELECTRODE WITH A DROP-TIME RANGING FROM 0.20 TO 0.33 SECOND, AND APPLYING A VOLTAGE TO THE ELECTRICAL CIRCUIT OF SUCH MAGNITUDE THAT THE CURRENT, CORRECTED FOR TEMPERATURE VARIATION AND FOR RESIDUAL CURRENT, IS PROPORTIONAL TO THE DISSOLVED OXYGEN IN THE LIQUID.
Claim 2
Dependent Claim
106 words
A PROCESS FOR THE DETERMINATION OF DISSOLVED OXYGEN IN AN ELECTROLYTIC LIQUID USING AN INSTRUMENT INCLUDING A DROPPING MERCURY ELECTRODE AND A MERCURY POOL ANODE COMPRISING THE STEPS OF: FILLING THE SPACE BETWEEN THE DROPPING MERCURY ELECTRODE AND THE MERCURY POOL WITH THE LIQUID SO THAT THE LIQUID FORMS PART OF AN ELECTRICAL CIRCUIT, CAUSING DISCRETE DROPLETS OF MERCURY TO FLOW FROM THE DROPPING MERCURY ELECTRODE WITH A DROP-TIME RANGING FROM 0.20 TO 0.33 SECOND, AND APPLYING A VOLTAGE TO THE ELECTRICAL CIRCUIT OF SUCH MAGNITUDE THAT THE CURRENT, CORRECTED FOR TEMPERATURE VARIATION AND FOR RESIDUAL CURRENT, IS PROPORTIONAL TO THE DISSOLVED OXYGEN IN THE LIQUID.
References Cited (Backward Citations)
US2500284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |