Patent US4259164A successfully refreshed from Google Patents.
US4259164A
Expired / Lapsed
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Silver/silver halide electrodes comprising chromium or nickel
Assignee: Clinical Diagnostic Systems Inc
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Filing: 1979-08-13
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Granted: 1981-03-31
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Expires: 1999-08-13
Abstract
Abstract A silver/silver halide electrode is prepared by coating portions of a layer of silver with a metal selected from the group consisting of chromium and nickel or mixtures or alloys of nickel and chromium and overall treating with an oxidizing agent in the presence of halide ions to form a silver halide layer on those portions of the silver layer not covered by metal. The electrodes can be used as assaying electrodes such as for halide ions or as reference electrodes. Reference elements formed from the reference electrodes are useful in providing ion-selective membrane electrodes.
Inventors
- 👤 Arthur A. Rasch
- 👤 Roger Searle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:56
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
57 words
A silver/silver halide electrode comprising a support containing a layer of silver, portions of said layer of silver having thereon a layer of a metal selected from the group consisting of nickel and chromium and mixtures and alloys of nickel and chromium, the portions of silver not covered with metal having thereon a layer of silver halide.
Claim 2
Dependent Claim
57 words
A silver/silver halide electrode comprising a support containing a layer of silver, portions of said layer of silver having thereon a layer of a metal selected from the group consisting of nickel and chromium and mixtures and alloys of nickel and chromium, the portions of silver not covered with metal having thereon a layer of silver halide.
Claim 3
Dependent Claim
10 words
The electrode of claim 1 wherein said metal is chromium.
Claim 4
Dependent Claim
11 words
The electrode of claim 1 wherein the said metal is nickel.
Claim 5
Dependent Claim
16 words
The electrode of claim 1 wherein the metal layer is coated on the silver in stripes.
Claim 6
Dependent Claim
64 words
A silver/silver halide reference element comprising a support containing a layer of silver, portions of said layer of silver having thereon a metal selected from the group consisting of nickel and chromium and alloys or mixtures of nickel and chromium, the portions of silver not covered by metal having thereon a first layer of silver halide and a second layer comprising a metal salt.
Claim 7
Dependent Claim
64 words
A silver/silver halide reference element comprising a support containing a layer of silver, portions of said layer of silver having thereon a metal selected from the group consisting of nickel and chromium and alloys or mixtures of nickel and chromium, the portions of silver not covered by metal having thereon a first layer of silver halide and a second layer comprising a metal salt.
Claim 8
Dependent Claim
17 words
The element of claim 5 wherein the metal layer is coated on said silver layer in stripes.
Claim 9
Dependent Claim
24 words
The element of claim 5 wherein the metal salt is selected from the group consisting of halides of ammonium, alkali and alkaline earth metals.
Claim 10
Dependent Claim
10 words
The element of claim 5 wherein said metal is chromium.
Claim 11
Dependent Claim
10 words
The element of claim 5 wherein said metal is nickel.
Claim 12
Dependent Claim
79 words
An ion-selective electrode comprising a support having thereon a silver layer, portions of said silver layer having thereon a metal selected from the group consisting of chromium and nickel and mixtures or alloys of chromium and nickel, the portions of silver not covered with said metal having thereon a first layer of silver halide and a second layer comprising a metal salt and a third layer comprising a membrane comprising an ionophore, a carrier solvent and a hydrophobic binder.
Claim 13
Dependent Claim
79 words
An ion-selective electrode comprising a support having thereon a silver layer, portions of said silver layer having thereon a metal selected from the group consisting of chromium and nickel and mixtures or alloys of chromium and nickel, the portions of silver not covered with said metal having thereon a first layer of silver halide and a second layer comprising a metal salt and a third layer comprising a membrane comprising an ionophore, a carrier solvent and a hydrophobic binder.
Claim 14
Dependent Claim
16 words
The electrode of claim 10 wherein the silver layer is coated with said metal in stripes.
Claim 15
Dependent Claim
10 words
The electrode of claim 10 wherein said metal is chromium.
Claim 16
Dependent Claim
10 words
The electrode of claim 10 wherein said metal is nickel.
Claim 17
Dependent Claim
14 words
The electrode of claim 10 wherein said metal salt layer comprises a hydrophilic binder.
Claim 18
Dependent Claim
25 words
The electrode of claim 14 wherein said metal salt is selected from the group consisting of halides of ammonium, alkali metals and alkaline earth metals.
Claim 19
Dependent Claim
15 words
The electrode of claim 10 wherein said membrane layer is coated with a polymeric layer.
Claim 20
Dependent Claim
43 words
A halide sensitive electrode comprising a silver layer partially coated with chromium or nickel or mixtures or alloys of chromium and nickel and containing silver halide in the uncoated areas of the silver layer wherein the electrode is overcoated with a polymeric layer.
Claim 21
Dependent Claim
43 words
A halide sensitive electrode comprising a silver layer partially coated with chromium or nickel or mixtures or alloys of chromium and nickel and containing silver halide in the uncoated areas of the silver layer wherein the electrode is overcoated with a polymeric layer.
Claim 22
Dependent Claim
12 words
The electrode of claim 17 wherein said polymeric layer comprises cellulose acetate.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |