US3718569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making solid state glass electrode
Assignee: Beckman Coulter Inc
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Filing: 1971-11-29
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Granted: 1973-02-27
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Expires: 1991-11-29
Abstract
Abstract A solid state glass electrode in which a conductor having a surface layer of an electrochemically active metal is coated with a first coating of a mixture of a glass and a halide of the active metal and a second outer coating of ion sensitive glass. The preferred active metal and halide are copper and cuprous chloride, respectively. The electrode is rugged, has a response approximating that of a standard glass electrode and has better stability over long periods and changing temperature conditions than previous solid state glass electrodes.
Inventors
- 👤 A Petersen
- 👤 G Matsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:10
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/36; Y; Y10; Y10S; Y10S65/00; Y10S65/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
62 words
A method as set forth in claim 1 wherein said first coating is applied to said surface layer by: mixing said first glass in powdered form with said metal halide in powdered form; depositing said mixture of powdered first glass and metal halide to said surface layer; fusing said mixture; and allowing said fused mixture to cool to form said first coating.
Claim 2
Dependent Claim
83 words
A method as set forth in claim 1 wherein said first coating is applied to said surface layer by: mixing said first glass in powdered form with said metal halide in powdered form; heating said mixture of powdered first glass and metal halide until it is molten; dipping said one end of said conductor into said molten mixture to coat said surface layer with said molten mixture; and allowing said molten mixture on said surface layer to cool to form said first coating.
Claim 3
Dependent Claim
16 words
A method as set forth in claim 1 wherein: said first glass is ion sensitive glass.
Claim 4
Dependent Claim
20 words
A method as set forth in claim 1 wherein: said first glass is the same as said ion sensitive glass.
Claim 5
Dependent Claim
13 words
A method as set forth in claim 1 wherein: said halide is chloride.
Claim 6
Dependent Claim
24 words
A method as set forth in claim 1 wherein: said active metal is selected from the group consisting of copper, silver, cobalt and cadmium.
Claim 7
Dependent Claim
21 words
A method as set forth in claim 1 wherein: said active metal is copper; and sAid metal halide is cuprous chloride.
References Cited (Backward Citations)
US2047029A
Cited
GB492936A
Cited
US3282817A
Cited
US3306837A
Cited
US3498901A
Cited
US3458422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |