US3689223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection method
Assignee: United States Department of the Army
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Filing: 1970-05-18
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Granted: 1972-09-05
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Expires: 1990-05-18
Abstract
Abstract A METHOD FOR INDICATING THE PRESENCE OF NON-VOLATILE COMPOUNDS COMPRISING REACTING A SOLUTION CONTAINING NONVOLATILE NUCLEOPHILES AND REDUCING AGENTS, AND A DETECTING SOLUTION COMPRISING HEXAMMINECOBALT (III) PERCHLORATE AND A FLUID SELECTED FROM THE GROUP CONSISTING OF A BORATED BUFFER AND DIMETHYLSULFOXIDE, PRODUCING AMMONIA AS THE INDICATOR FOR THE PRESENCE OF THE NON-VOLATILE COMPOUNDS.
Inventors
- 👤 Edward J Poziomek
- 👤 Ethel B Hackley
- 👤 Daniel J Hoy
- 👤 Harry George Friedman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:03
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/221; Y; Y10; Y10T; Y10T436/00; Y10T436/16; Y10T436/163333; Y10T436/17; Y10T436/173845; Y10T436/19; Y10T436/196666
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |