US3567382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isocyanide indicator
Assignee: United States Department of the Army
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Filing: 1968-04-23
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Granted: 1971-03-02
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Expires: 1988-04-23
Abstract
Abstract THE COLORIMETRIC METHOD OF DETECHING THE PRESENCE OF MICROGRAM AMOUNTS OF ISOCYANIDE GROUPS IN THE VARIOUS CHEMICAL COMPOUNDS OR MIXTURES COMPRISING THE STEPS OF PLACING THE CHEMICAL COMPOUND OR MIXTURE UPON AN INERT SUPPORT MEDIUM AND THEN CONTACTING WITH THE DETECTOR A BENZIDINE REAGENT OR TETRA BASE REAGENT PRODUCING A BLUE COLOR INDICATING THE PRESENCE OF THE ISOCYANIDE GROUP.
Inventors
- 👤 Eleanor V Crabtree
- 👤 Edward J Poziomek
- 👤 Daniel J Hoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:32
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; Y; Y10; Y10T; Y10T436/00; Y10T436/17; Y10T436/172307
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |