US4065363A
Expired / Lapsed
US
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Process for the electrometric measurement of cyanide ions in solutions containing metal ions
Assignee: AMP-AKKZO Corp A CORPORATION OF DELAWARE
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Filing: 1971-12-06
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Granted: 1977-12-27
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Expires: 1991-12-06
Abstract
Abstract This invention is concerned with a novel process for the electrometric determination of the cyanide ion content of solutions comprising cyanide ion, a strong reducing agent and a metal ion.
Inventors
- 👤 Gunther Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:11
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/333; G01N27/3335
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A process for the determination of the cyanide ion content of a solution which comprises cyanide ions, a strong reducing agent, and a silver ion, said method comprising providing in said solution an amount of metal complexer in excess of that required to complex the silver ion; providing in contact with said solution a cyanide ion selective electrode that has connected thereto, direct reading potentiometric measurement means and, thereafter, determining from said direct reading potentiometric measurement means the cyanide ion concentration.
Claim 2
Dependent Claim
81 words
A process for the determination of the cyanide ion content of a solution which comprises cyanide ions, a strong reducing agent, and a silver ion, said method comprising providing in said solution an amount of metal complexer in excess of that required to complex the silver ion; providing in contact with said solution a cyanide ion selective electrode that has connected thereto, direct reading potentiometric measurement means and, thereafter, determining from said direct reading potentiometric measurement means the cyanide ion concentration.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |