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Patent US3793176A successfully refreshed from Google Patents.
US3793176A
Expired / Lapsed
US
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Electrochemical electrode internal half cell
Assignee: Beckman Coulter Inc
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Filing: 1972-06-19
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Granted: 1974-02-19
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Expires: 1992-06-19
Abstract
Abstract An electrochemical electrode internal half cell in which the conductor is sealed within a plastic shrink tube by means of an inner layer of plastic having a melting temperature less than that of the shrink tube. A porous plug closes one end of the tube and the section of the tube between the plug and the seal is packed with a mixture of a metal and a sparingly soluble salt of the metal. Methods of making the internal half cell are described.
Inventors
- 👤 Jones P Jerrold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:53
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/301
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
An internal half cell as set forth in claim 1 wherein said layer of plastic extends to the opposite ends of said shrink tube.
Claim 2
Dependent Claim
29 words
An internal half cell as set forth in claim 1 wherein said metal and salt are in the form of an intimate mixture filling said section of said tube.
Claim 3
Dependent Claim
27 words
An internal half cell as set forth in claim 3 wherein said metal is mercury, said salt is mercurous chloride and said conductor is formed of palladium.
Claim 4
Dependent Claim
27 words
An internal half cell as set forth in claim 1 wherein said conductor is formed of a metal other than platinum and is unreactive with said salt.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |