US3764269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensor for fluid components
Assignee: ENVIRONMENTAL MONITORING & SERVICES Inc A CORP OF
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Filing: 1971-12-28
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Granted: 1973-10-09
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Expires: 1991-12-28
Abstract
Abstract AN ELECTROCHEMICAL DEVICE FOR SENSING FLUID COMPONENTS, PARTICULARLY GASES, IS COMPRISED OF A THIN MEMBRANE THROUGH WHICH THE COMPONENT PASSES TO REACT WITH A COMPOSITION TO LIBERATE ELEMENTAL CHLORINE, BROMINE, FLUORINE OR IODINE. THE CHLORINE, BROMINE, FLUORINE OR IODINE PASSES THROUGH A POROUS LAYER AND ACTIVATES THE POSITIVE ELECTRODE OF A SOLID IONIC ELECTROLYTE BATTERY OF THE TYPE: IODINE/SOLID IONIC ELECTROLYTE/METAL ELECTRODE, WHEREBY A CURRENT FLOW IS GENERATED THROUGH A MEASURING DEVICE, THE CURRENT BEING PROPORTIONAL TO THE CONCENTRATION OF THE FLUID COMPONENT.
Inventors
- 👤 K Oldham
- 👤 L Topol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:51
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N27/4073; G01N27/4074
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |