US2760152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator for the demineralization of water
Assignee: Veolia WTS Systems USA Inc
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Filing: 1953-08-19
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Granted: 1956-08-21
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Expires: 1973-08-19
Abstract
No abstract record available.
Inventors
- 👤 William E Katz
- 👤 Andrew A Kasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; G01N27/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A DEVICE FOR MONITORING THE ELECTROLYTE CONCENTRATION OF AQUEOUS SOLUTIONS COMPRISING A PAIR OF EXPOSED ELECTRODES FOR IMMERSION IN SAID SOLUTION, AT LEAST ONE END OF EACH ELECTRODE BEING EMBEDDED IN A CASING, SAID ELECTRODES BEING CONNECTED IN SAID CASING IN PARALLEL TO AN ELECTRONIC GLOW LAMP AND POWER LEADS, THE GLOW LAMP BEING CHARACTERIZED BY A PREDETERMINED ENERGIZING VOLTAGE DIRECTLY ACROSS SAID ELECTRODES, MEANS SITUATED IN SAID CASING BETWEEN THE GLOW LAMP AND THE ELECTRODES FOR CONTINUOUSLY REMOVING MOISTURE CAUSED BY LEAKAGE IN THE CASING, IMPEDANCE SUFFICIENTLY LARGE TO LIMIT THE CURRENT THROUGH SAID GLOW LAMP IN SERIES WITH SAID ELECTRODES AND GLOW LAMP, SAID ELECTRODES BEING OF SURFACE AREA AND SPACING ADAPTED TO PROVIDE AN IMPEDANCE BETWEEN THEM WHEN IMMERSED IN SAID SOLUTION TO CAUSE THE VOLTAGE ACROSS SAID ELECTRODES AND GLOW LAMP TO EQUAL THE ENERGIZING VOLTAGE OF SAID GLOW LAMP WHEN THE SPECIFIC CONDUCTIVITY OF SAID SOLUTION IS AT A PREDETERMINED VALUE CORRESPONDING TO THE DESIRED ELECTROLYTE CONCENTRATION OF SAID SOLUTION.
Claim 2
Independent Claim
165 words
A DEVICE FOR MONITORING THE ELECTROLYTE CONCENTRATION OF AQUEOUS SOLUTIONS COMPRISING A PAIR OF EXPOSED ELECTRODES FOR IMMERSION IN SAID SOLUTION, AT LEAST ONE END OF EACH ELECTRODE BEING EMBEDDED IN A CASING, SAID ELECTRODES BEING CONNECTED IN SAID CASING IN PARALLEL TO AN ELECTRONIC GLOW LAMP AND POWER LEADS, THE GLOW LAMP BEING CHARACTERIZED BY A PREDETERMINED ENERGIZING VOLTAGE DIRECTLY ACROSS SAID ELECTRODES, MEANS SITUATED IN SAID CASING BETWEEN THE GLOW LAMP AND THE ELECTRODES FOR CONTINUOUSLY REMOVING MOISTURE CAUSED BY LEAKAGE IN THE CASING, IMPEDANCE SUFFICIENTLY LARGE TO LIMIT THE CURRENT THROUGH SAID GLOW LAMP IN SERIES WITH SAID ELECTRODES AND GLOW LAMP, SAID ELECTRODES BEING OF SURFACE AREA AND SPACING ADAPTED TO PROVIDE AN IMPEDANCE BETWEEN THEM WHEN IMMERSED IN SAID SOLUTION TO CAUSE THE VOLTAGE ACROSS SAID ELECTRODES AND GLOW LAMP TO EQUAL THE ENERGIZING VOLTAGE OF SAID GLOW LAMP WHEN THE SPECIFIC CONDUCTIVITY OF SAID SOLUTION IS AT A PREDETERMINED VALUE CORRESPONDING TO THE DESIRED ELECTROLYTE CONCENTRATION OF SAID SOLUTION.
References Cited (Backward Citations)
US2283728A
Cited
US2221307A
Cited
US2258045A
Cited
US2254214A
Cited
US2528889A
Cited
US2475023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |