US3629089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free and combined cyanide measuring apparatus
Assignee: Honeywell Inc
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Filing: 1970-01-22
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Granted: 1971-12-21
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Expires: 1990-01-22
Abstract
Abstract There is disclosed an apparatus for measuring both free and combined cyanide in a solution. The invention also provides for means of distinguishing the quantities of various types of cyanide complexes contained in a solution.
Inventors
- 👤 James R Luck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:59
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4166
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
14 words
A system in accordance with claim 1 including indicating means for displaying said signal.
Claim 2
Dependent Claim
20 words
A system in accordance with claim 1 wherein the first mentioned metal is gold and the other metal is cadmium.
Claim 3
Dependent Claim
16 words
A system in accordance with claim 3 wherein the reference electrode is a saturated calomel electrode.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |