US2822324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarographic apparatus and method
Assignee: Standard Oil Co
•
Filing: 1955-01-28
•
Granted: 1958-02-04
•
Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 Gaylor Verna Frances
- 👤 Landerl Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:48
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A POLAROGRAPHIC APPARATUS COMPRISING MEANS FOR CONTAINING A SOLUTION TO BE ANALYZED, A REFERENCE ELECTRODE AND AN INDICATING ELECTRODE DISPOSED TO CONTACT SAID SOLUTION, SAID INDICATING ELECTRODE BEING A GRAPHITE ELECTRODE IMPREGNATED WITH AN ELECTRICALLY INERT WAX SELECTED FROM A GROUP CONSISTING OF HYDROGENATED CASTOR OIL AND CERESIN WAX, MEANS FOR IMPRESSING A RECURRENT SUBSTANTIALLY LINEAR VOLTAGE SWEEP ACROSS SAID ELECTRODES GIVING RISE TO A VARYING FLOW OF CURRENT THEREBETWEEN, AND INDICATING MEANS IMMEDIATELY RESPONSIVE TO THE VARIACTIONS IN SAID CURRENT.
Claim 2
Dependent Claim
81 words
A POLAROGRAPHIC APPARATUS COMPRISING MEANS FOR CONTAINING A SOLUTION TO BE ANALYZED, A REFERENCE ELECTRODE AND AN INDICATING ELECTRODE DISPOSED TO CONTACT SAID SOLUTION, SAID INDICATING ELECTRODE BEING A GRAPHITE ELECTRODE IMPREGNATED WITH AN ELECTRICALLY INERT WAX SELECTED FROM A GROUP CONSISTING OF HYDROGENATED CASTOR OIL AND CERESIN WAX, MEANS FOR IMPRESSING A RECURRENT SUBSTANTIALLY LINEAR VOLTAGE SWEEP ACROSS SAID ELECTRODES GIVING RISE TO A VARYING FLOW OF CURRENT THEREBETWEEN, AND INDICATING MEANS IMMEDIATELY RESPONSIVE TO THE VARIACTIONS IN SAID CURRENT.
References Cited (Backward Citations)
US1547539A
Cited
US1909800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |