US3833495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reference electrode half cell
Assignee: DS MEDICAL PRODUCTS Co A CORP
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Filing: 1972-07-21
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Granted: 1974-09-03
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Expires: 1992-07-21
Abstract
Abstract A reference electrode half cell has an elongated, flexible electrically insulated tube having opposite open ends, a silver wire positioned partially within the tube at one end thereof and extending outwardly from the one end, the tube bonded to the silver wire at the one end, a coating of silver chloride on a portion of the silver wire positioned within the tube, and at least one gelled equitransferent salt solution filling the tube in contact with the silver chloride coating on the silver wire and in contact with the opposite open end of the tube.
Inventors
- 👤 W Grubb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:39
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/401
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A salt bridge comprising an elongated flexible insulated tube, gelled potassium chloride and lithium trichloroacetate salt solutions filling the tube, the gelled potassium chloride solution in contact with one end of the tube, and gelled lithium trichloroacetate solution in contact with the gelled potassium chloride solution and with the other end of the tube.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |