US4242191A
Expired / Lapsed
US
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Ion selective sensor and method of making such sensor
Assignee: Dr Eduard Fresenius Chemisch Pharmazeutische Industrie KG Apparatebau KG
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Filing: 1979-05-08
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Granted: 1980-12-30
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Expires: 1999-05-08
Abstract
Abstract An ion-sensitive sensor has an electron-conducting electrode and a membrane for determining the selectivity which is arranged to come into contact with a medium to be analyzed. The membrane is applied to an ion-conducting layer of glass which is in connection with the electron-conducting electrode via an ion-conductor. The membrane preferably comprises at least one organic polymer, such as PVC, having ion-active components, such as organic carrier molecules, selective ligands or ion exchangers, embedded therein. The layer of glass may also have ion-selective properties.
Inventors
- 👤 Johannes G. Schindler
- 👤 Wilfried Schal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335; G01N27/36
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
62 words
In an ion-selective sensor for use in a medium to be analyzed, including a first electrode having a housing with a chamber therein, said chamber bein terminated at one end by an ion-conducting layer of glass and a second electrode unit, the improvement comprising an ion-selective membrane for determining the selectivity of said electrode unit disposed upon said ion-conducting layer of glass.
Claim 2
Dependent Claim
62 words
In an ion-selective sensor for use in a medium to be analyzed, including a first electrode having a housing with a chamber therein, said chamber bein terminated at one end by an ion-conducting layer of glass and a second electrode unit, the improvement comprising an ion-selective membrane for determining the selectivity of said electrode unit disposed upon said ion-conducting layer of glass.
Claim 3
Dependent Claim
21 words
A sensor according to claim 1, wherein said membrane comprises at least one organic polymer having ion-selectively active components embedded therein.
Claim 4
Dependent Claim
20 words
A sensor according to claim 1, wherein the ion-selectively active components comprise organic carrier molecules, selective ligands or ion exchangers.
Claim 5
Dependent Claim
15 words
A sensor according to claim 1, wherein the layer of glass also has ion-selective properties.
Claim 6
Dependent Claim
16 words
A sensor according to claim 1, further including a ligand ion conducting medium in said chamber.
Claim 7
Dependent Claim
17 words
A sensor according to claim 1, further including a solid ion conducting medium disposed in said chamber.
Claim 8
Dependent Claim
25 words
A sensor according to claim 1, wherein the membrane is disposed in a depression formed by said glass proximate one end of said first electrode.
Claim 9
Dependent Claim
27 words
A sensor according to claim 7, wherein the depression is formed by a guide bushing surrounding the ion-conducting layer of glass projecting beyond said layer of glass.
Claim 10
Dependent Claim
22 words
A sensor according to claim 8, wherein said guide bushing is made of a material which can be dissolved by said solvent.
Claim 11
Dependent Claim
16 words
A sensor according to claim 1, wherein the membrane material is soluble in an organic solvent.
Claim 12
Dependent Claim
37 words
A sensor according to claim 1, further including a hollow housing for receiving said sensor body, said membrane completely encasing the ion-conducting layer of glass and producing a seal with respect to said housing and said sensor.
Claim 13
Dependent Claim
46 words
A method of manufacturing an ion-selective sensor as described in claim 1, comprising the steps of: (a) dissolving an organic polymer together with ion-active substances in a suitable solvent; (b) applying said polymer to said ion-conducting layer of glass; and (c) allowing said polymer to dry.
Claim 14
Dependent Claim
103 words
An ion-selective sensor comprising: (a) a housing having two coaxial chambers, the inner coaxial chamber being terminated at one end in an ion-conducting layer of glass, said outer chamber adapted to communicate, via a porous medium, with a medium to be analyzed; (b) an ion-selective membrane for determining the selectivity of said sensor coating said ion-conducting layer of glass; and (c) first and second electrodes adapted to be connected to a measurement source, said first electrode being immersed into an ion-conducting medium disposed within said inner chamber, said second electrode being immersed into said medium to be analyzed disposed within said outer chamber.
Claim 15
Dependent Claim
103 words
An ion-selective sensor comprising: (a) a housing having two coaxial chambers, the inner coaxial chamber being terminated at one end in an ion-conducting layer of glass, said outer chamber adapted to communicate, via a porous medium, with a medium to be analyzed; (b) an ion-selective membrane for determining the selectivity of said sensor coating said ion-conducting layer of glass; and (c) first and second electrodes adapted to be connected to a measurement source, said first electrode being immersed into an ion-conducting medium disposed within said inner chamber, said second electrode being immersed into said medium to be analyzed disposed within said outer chamber.
Claim 16
Dependent Claim
65 words
In an ion-selective sensor for use in a medium to be analyzed, including the first electrode and a second electrode unit, said first electrode having a housing with a chamber therein, said chamber being terminated at one end by an ion-conducting layer of glass being coated by a membrane, the improvement wherein said membrane comprises ion-selectively active components for determining the selectivity of said sensor.
Claim 17
Dependent Claim
65 words
In an ion-selective sensor for use in a medium to be analyzed, including the first electrode and a second electrode unit, said first electrode having a housing with a chamber therein, said chamber being terminated at one end by an ion-conducting layer of glass being coated by a membrane, the improvement wherein said membrane comprises ion-selectively active components for determining the selectivity of said sensor.
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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |