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US3825482A
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Ion-selective electrodes using tungsten bronzes as active element
Assignee: Iowa State University Research Foundation Inc
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Filing: 1972-02-16
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Granted: 1974-07-23
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Expires: 1992-02-16
Abstract
Abstract TUNGSTEN BRONZES, WHICH ARE COMPOUNDS HAVING A GENERAL FORMULA AXWO3 WHERE X IS ANY VALUE BETWEEN ZERO AND ONE EXCLUSIVE HAVE BEEN FOUND TO FUNCTION AS THE ACTIVE ELEMENT IN ION-SELECTIVE ELECTRODES. THEY HAVE BEEN FOUND TO BE SENSITIVE TO MERCURY, SILVER AND IRON IN SOLUTION.
Inventors
- 👤 M Wechter
- 👤 H Shanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:36
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |