US3259461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for measuring the corrosion rate of test specimens or the like
Assignee: Reynolds Metals Co
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Filing: 1961-08-23
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Granted: 1966-07-05
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Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Roger C Griffin
- 👤 Iii Nathaniel A Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:36
CPC Classifications
G; G01; G01N; G01N17/00; G01N17/02; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/115831
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD FOR MEASURING THE RATE OF CORROSION OF A TEST SPECIMEN AND COMPRISING THE STEPS OF SEPARATING A DESIRED CORROSION MEANS FROM A LIQUID BY SAID TEST SPECIMEN, SAID LIQUID HAVING A KNOWN ELECTRICAL RESISTANCE WHEN FREE OF IONS OF SAID CORROSION MEANS, AND MEASURING THE ELAPSED TIME FROM THE MOMENT SAID CORROSION MEANS IS PLACED IN CONTACT WITH SAID TEST SPECIMEN TO THE MOMENT WHEN THE ELECTRICAL RESISTANCE OF SAID LIQUID CHANGES DUE TO THE PRESENCE OF IONS OF SAID CORROSION MEANS ENTERING SAID LIQUID WHEN SAID CORROSIVE MEANS EATS THROUGH SAID TEST SPECIMEN WHEREBY THE CORROSION RATE OF SAID TEST SPECIMEN CAN BE DETERMINED.
Claim 2
Independent Claim
107 words
A METHOD FOR MEASURING THE RATE OF CORROSION OF A TEST SPECIMEN AND COMPRISING THE STEPS OF SEPARATING A DESIRED CORROSION MEANS FROM A LIQUID BY SAID TEST SPECIMEN, SAID LIQUID HAVING A KNOWN ELECTRICAL RESISTANCE WHEN FREE OF IONS OF SAID CORROSION MEANS, AND MEASURING THE ELAPSED TIME FROM THE MOMENT SAID CORROSION MEANS IS PLACED IN CONTACT WITH SAID TEST SPECIMEN TO THE MOMENT WHEN THE ELECTRICAL RESISTANCE OF SAID LIQUID CHANGES DUE TO THE PRESENCE OF IONS OF SAID CORROSION MEANS ENTERING SAID LIQUID WHEN SAID CORROSIVE MEANS EATS THROUGH SAID TEST SPECIMEN WHEREBY THE CORROSION RATE OF SAID TEST SPECIMEN CAN BE DETERMINED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |