US3086169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems for measuring electrolytic conductivity
Assignee: Leeds and Northrup Co
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Filing: 1960-01-15
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Granted: 1963-04-16
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Expires: 1980-01-15
Abstract
No abstract record available.
Inventors
- 👤 James U Eynon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:26
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SYSTEM FOR MEASURING THE CONDUCTIVITY OF A LIQUID COMPRISING A CONDUCTIVITY CELL, RESISTANCE MEANS, A VOLTAGE-REGULATING POWER TRANSFORMER HAVING A PRIMARY WINDING FOR CONNECTION TO AN ALTERNATING-CURRENT SOURCE AND A SECONDARY WINDING CONNECTED TO APPLY ITS CONSTANT ALTERNATING OUTPUT VOLTAGE TO SAID CONDUCTIVITY CELL AND SAID RESISTANCE MEANS IN SERIES, A DEMODULATOR HAVING TWO INPUT CIRCUITS AND AN OUTPUT CIRCUIT, A SIGNAL TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS SAID RESISTANCE
Claim 2
Independent Claim
72 words
A SYSTEM FOR MEASURING THE CONDUCTIVITY OF A LIQUID COMPRISING A CONDUCTIVITY CELL, RESISTANCE MEANS, A VOLTAGE-REGULATING POWER TRANSFORMER HAVING A PRIMARY WINDING FOR CONNECTION TO AN ALTERNATING-CURRENT SOURCE AND A SECONDARY WINDING CONNECTED TO APPLY ITS CONSTANT ALTERNATING OUTPUT VOLTAGE TO SAID CONDUCTIVITY CELL AND SAID RESISTANCE MEANS IN SERIES, A DEMODULATOR HAVING TWO INPUT CIRCUITS AND AN OUTPUT CIRCUIT, A SIGNAL TRANSFORMER HAVING A PRIMARY WINDING CONNECTED ACROSS SAID RESISTANCE
References Cited (Backward Citations)
US2422873A
Cited
US2897436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |