US3714015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensor with ion exchange resin electrolyte
Assignee: DS MEDICAL PRODUCTS Co A CORP
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Filing: 1970-09-04
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Granted: 1973-01-30
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Expires: 1990-09-04
Abstract
Abstract A sensor has an elongated flexible current collector, an electrochemically active region in electrical contact with a portion of the current collector, a second elongated flexible current collector surrounding the first current collector, a second electrochemically active region in electrical contact with a portion of the second current collector, a first layer of electrical insulation disposed between the first and second current collectors, a second layer of electrical insulation disposed over the second current collector, an ion exchange resin electrolyte contacting both electrochemically active regions, and an outer sheath of diffusion barrier material encapsulating at least the electrochemically active regions and the electrolyte. Methods of manufacturing sensors including polarographic oxygen sensors are also described.
Inventors
- 👤 L Niedrach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:10
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A sensor comprising a first elongated flexible current collector, an electrochemically active region in electrical contact with a portion of the current collector, a second elongated flexible current collector surrounding at least partially the first current collector, a second electrochemically active region in electrical contact with a portion of the second current collector, a first layer of electrical insulation disposed between the first and second current collectors, a second layer of electrical insulation disposed over the second current collector, an ion exchange resin electrolyte contacting both electrochemically active regions, and an outer sheath of diffusion barrier material encapsulating at least the electrochemically active regions and the electrolyte.
Claim 2
Dependent Claim
107 words
A sensor comprising a first elongated flexible current collector, an electrochemically active region in electrical contact with a portion of the current collector, a second elongated flexible current collector surrounding at least partially the first current collector, a second electrochemically active region in electrical contact with a portion of the second current collector, a first layer of electrical insulation disposed between the first and second current collectors, a second layer of electrical insulation disposed over the second current collector, an ion exchange resin electrolyte contacting both electrochemically active regions, and an outer sheath of diffusion barrier material encapsulating at least the electrochemically active regions and the electrolyte.
Claim 3
Dependent Claim
20 words
In a polarographic oxygen sensor as in claim 1, in which the outer sheath is an oxygen diffusion barrier material.
Claim 4
Dependent Claim
74 words
In a polarographic oxygen sensor as in claim 1, in which the first current collector is a palladium wire, the first electrochemically active region is hydrided palladium with a surface coating of platinum black, the second current collector is gold, the second electrochemically active region is silver, the electrolyte is quaternized polystyrene in its phosphate form, the first insulation is polyester resin lacquer, and the second insulation and diffusion barrier are hexafluoropropylene-vinylidene fluoride rubber.
Claim 5
Dependent Claim
34 words
In a polarographic oxygen sensor as in claim 1, in which the second electrochemically active region is in the form of a wire spiral and the wire spiral surrounds a portion of the electrolyte.
Claim 6
Dependent Claim
83 words
In a polarographic oxygen sensor as in claim 1, in which at least one continuous opening extends outwardly from an exposed, non-insulated portion on the first current collector through the first insulation, second current collector and second insulation, the first active region is in electrical contact with the exposed portion on the first current collector, the second active region is in electrical contact with the second current collector at said continuous opening, and the electrolyte fills the opening thereby contacting both active regions.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |