US3365376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for the continuous measurement of the ion concentration in a liquid
Assignee: Akzona Inc
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Filing: 1966-11-11
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Granted: 1968-01-23
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Expires: 1986-11-11
Abstract
No abstract record available.
Inventors
- 👤 Herman G Weyland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:27
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD FOR MEASURING THE ION CONCENTRATION OF A SOLUTION OF AN ELECTROLYTE WHICH COMPRISES ESTABLISHING AN ELECTRICAL CIRCUIT CONNECTING SAID SOLUTION TO BE MEASURED AND A REFERENCE SOLUTION, SAID CIRCUIT INCLUDING AN ION CONCENTRATION SENSITIVE SENSING ELECTRODE AND A REFERENCE ELECTRODE, PASSING SAID SENSING ELECTRODE BACK AND FORTH AT A PREDETERMINED FREQUENCY BETWEEN SAID SOLUTION TO BE MEASURED AND SAID REFERENCE SOLUTION, SAID ELECTRODE DURING SAID PASSAGE BETWEEN SAID BATHS DEVELOPING A VOLTAGE HAVING AN A.C. COMPONENT, SAID A.C. COMPONENT OF SAID VOLTAGE BEING AN INDICATION OF THE DIFFERENCE BETWEEN THE ION CONCENTRATIONS OF SAID SOLUTIONS, AMPLIFYING SAID A.C. COMPONENT OF SAID VOLTAGE, AND MEASURING SAID AMPLIFIED A.C. COMPONENT.
Claim 2
Independent Claim
110 words
A METHOD FOR MEASURING THE ION CONCENTRATION OF A SOLUTION OF AN ELECTROLYTE WHICH COMPRISES ESTABLISHING AN ELECTRICAL CIRCUIT CONNECTING SAID SOLUTION TO BE MEASURED AND A REFERENCE SOLUTION, SAID CIRCUIT INCLUDING AN ION CONCENTRATION SENSITIVE SENSING ELECTRODE AND A REFERENCE ELECTRODE, PASSING SAID SENSING ELECTRODE BACK AND FORTH AT A PREDETERMINED FREQUENCY BETWEEN SAID SOLUTION TO BE MEASURED AND SAID REFERENCE SOLUTION, SAID ELECTRODE DURING SAID PASSAGE BETWEEN SAID BATHS DEVELOPING A VOLTAGE HAVING AN A.C. COMPONENT, SAID A.C. COMPONENT OF SAID VOLTAGE BEING AN INDICATION OF THE DIFFERENCE BETWEEN THE ION CONCENTRATIONS OF SAID SOLUTIONS, AMPLIFYING SAID A.C. COMPONENT OF SAID VOLTAGE, AND MEASURING SAID AMPLIFIED A.C. COMPONENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |