Patent US4083764A successfully refreshed from Google Patents.
US4083764A
Expired / Lapsed
US
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Ion-selective electrode
Assignee: US Philips Corp
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Filing: 1975-12-15
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Granted: 1978-04-11
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Expires: 1995-12-15
Abstract
Abstract Ion-selective electrode for selectively measuring the concentration of an ion in a solution of a mixture of ions, consisting of an ion-conducting or mixed ion-conducting - electron-conducting matrix material provided with a thin surface coating of a material which is sparingly soluble and which has one ion in common with the matrix material.
Inventors
- 👤 Renaat Edmond Van de Leest
- 👤 Nicolaas Marinus Beekmans
- 👤 Leopold Heijne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; C; C04; C04B; C04B35/00; C04B35/01; C04B35/447; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3289; C04B2235/3291; C04B2235/44; C04B2235/444
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
76 words
An ion-selective electrode for selectively measuring the concentration of an ion in a solution of a mixture of ions, comprising an ion-conducting or a mixed ion-conducting - electron-conducting matrix material of a mixed silver-iodine pyrophosphate having a specific ion conductivity of at least 2×10 -4 mho.cm -1 , and at least one coating on said matrix having a thickness of between 0.1 and 100 um of an ion-selective material of a silver halide or silver phosphate.
Claim 2
Dependent Claim
76 words
An ion-selective electrode for selectively measuring the concentration of an ion in a solution of a mixture of ions, comprising an ion-conducting or a mixed ion-conducting - electron-conducting matrix material of a mixed silver-iodine pyrophosphate having a specific ion conductivity of at least 2×10 -4 mho.cm -1 , and at least one coating on said matrix having a thickness of between 0.1 and 100 um of an ion-selective material of a silver halide or silver phosphate.
Claim 3
Dependent Claim
13 words
An electrode as claimed in claim 1, wherein the coating is silver phosphate.
References Cited (Backward Citations)
US3563874A
Cited
US3723589A
Cited
US3649506A
Cited
US3657093A
Cited
US3822198A
Cited
US3892833A
Cited
US3824170A
Cited
US3857777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |