US3094865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductometric corrosion measurement system
Assignee: Standard Oil Co
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Filing: 1959-07-03
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Granted: 1963-06-25
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Expires: 1979-07-03
Abstract
No abstract record available.
Inventors
- 👤 Dravnieks Andrew
- 👤 Arthur J Freedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:21
CPC Classifications
G; G01; G01N; G01N17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A LABORATORY APPARATUS FOR CORROSION RATE MEASUREMENTS WHICH COMPRISES A CONTAINER, A COVER FOR SAID CONTAINER, SAID COVER CARRYING AN EXPENDABLE ELECTRICALLYCONDUCTING CORROSION SPECIMEN AND A CORROSION-INSENSITIVE COMPENSATOR RESISTOR HAVING A RESISTANCE MUCH LARGER THAN THE RESISTANCE OF SAID METALLIC ELECTRICALLY CONDUCTING CORROSION SPECIMEN, A POTENTIOMETER CONNECTED ACROSS SAID EXPENDABLE ELECTRICALLY-CONDUCTING CORROSION SPECIMEN, CONDUIT MEANS CONNECTING SAID EXPENDABLE ELECTRICALLY CONDUCTING CORROSION SPECIMEN AND SAID CORROSIONRESISTANT COMPENSATOR RESISTOR IN ELECTRICAL SERIES, A TERMINAL BLOCK CARRIED BY SAID COVER, ADDITIONAL CONDUIT MEANS CONNECTING SAID TERMINAL BLOCK WITH SAID EXPENDABLE ELECTRICALLY CONDUCTING CORROSION SPECIMEN, A CENTER TAP ON SAID RHEOSTAT, AND SAID CORROSION-RESISTANT COMPENSATOR RESISTOR; AND A DETACHABLE CORROSION MEASUREMENT DEVICE HAVING A TERMINAL BLOCK REMOVABLY ATTACHABLE ON THE TERMINAL ON SAID CONTAINER COVER, SAID MEASURING DEVICE INCLUDING A SOURCE OF E.M.F. ARRANGED IN ELECTRICAL SERIES CONNECTION WITH SAID EXPENDABLE ELECTRICALLY CONDUCTING CORROSION SPECIMEN AND SAID CORROSION-RESISTANT COMPENSATOR RESISTOR, AND A POTENTIAL DETECTING MEANS CONNECTABLE TO ONE END OF SAID POTENTIOMETER AND THE CENTER TAP OF SAID POTENTIOMETER.
Claim 2
Dependent Claim
165 words
A LABORATORY APPARATUS FOR CORROSION RATE MEASUREMENTS WHICH COMPRISES A CONTAINER, A COVER FOR SAID CONTAINER, SAID COVER CARRYING AN EXPENDABLE ELECTRICALLYCONDUCTING CORROSION SPECIMEN AND A CORROSION-INSENSITIVE COMPENSATOR RESISTOR HAVING A RESISTANCE MUCH LARGER THAN THE RESISTANCE OF SAID METALLIC ELECTRICALLY CONDUCTING CORROSION SPECIMEN, A POTENTIOMETER CONNECTED ACROSS SAID EXPENDABLE ELECTRICALLY-CONDUCTING CORROSION SPECIMEN, CONDUIT MEANS CONNECTING SAID EXPENDABLE ELECTRICALLY CONDUCTING CORROSION SPECIMEN AND SAID CORROSIONRESISTANT COMPENSATOR RESISTOR IN ELECTRICAL SERIES, A TERMINAL BLOCK CARRIED BY SAID COVER, ADDITIONAL CONDUIT MEANS CONNECTING SAID TERMINAL BLOCK WITH SAID EXPENDABLE ELECTRICALLY CONDUCTING CORROSION SPECIMEN, A CENTER TAP ON SAID RHEOSTAT, AND SAID CORROSION-RESISTANT COMPENSATOR RESISTOR; AND A DETACHABLE CORROSION MEASUREMENT DEVICE HAVING A TERMINAL BLOCK REMOVABLY ATTACHABLE ON THE TERMINAL ON SAID CONTAINER COVER, SAID MEASURING DEVICE INCLUDING A SOURCE OF E.M.F. ARRANGED IN ELECTRICAL SERIES CONNECTION WITH SAID EXPENDABLE ELECTRICALLY CONDUCTING CORROSION SPECIMEN AND SAID CORROSION-RESISTANT COMPENSATOR RESISTOR, AND A POTENTIAL DETECTING MEANS CONNECTABLE TO ONE END OF SAID POTENTIOMETER AND THE CENTER TAP OF SAID POTENTIOMETER.
References Cited (Backward Citations)
US2987685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |