US3955926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and quick-action reagent for the detection of narcotics
Assignee: Merck Patent GmbH
•
Filing: 1973-02-12
•
Granted: 1976-05-11
•
Expires: 1993-02-12
Abstract
Abstract A quick-action reagent for the detection of narcotics comprising a solvent for the narcotic and a color reagent, at least one component of which is impregnated in an absorbent substrate.
Inventors
- 👤 Wolfgang Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:07
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N33/00; G01N33/48; G01N33/50; G01N33/94; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/141111; Y10T436/145555; Y10T436/147777
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
In a process for the detection of narcotics by dissolution of the unknown in a solvent for the narcotic and contacting the solution with a multi-component color reagent for the narcotic, the improvement wherein (a) samples of the unknown are separately tested for heroin and for morphine derivatives with a multi-component reagent for heroin and a multi-component reagent for morphine derivatives, (b) at least one component of each of said reagents is in dry form impregnated in an absorbent support and the remaining component thereof is in liquid form, (c) the component of the reagent for heroin in liquid form is a solution of benzylamine and iodic acid in dilute acid and the dry component thereof is an absorbent support impregnated with ferric chloride, an alkali tartrate and an alkali carbonate, and (d) the liquid component for morphine derivatives is sulfuric acid and the dry component thereof is an absorbent support impregnated with hexamethylenetetramine.
Claim 2
Dependent Claim
154 words
In a process for the detection of narcotics by dissolution of the unknown in a solvent for the narcotic and contacting the solution with a multi-component color reagent for the narcotic, the improvement wherein (a) samples of the unknown are separately tested for heroin and for morphine derivatives with a multi-component reagent for heroin and a multi-component reagent for morphine derivatives, (b) at least one component of each of said reagents is in dry form impregnated in an absorbent support and the remaining component thereof is in liquid form, (c) the component of the reagent for heroin in liquid form is a solution of benzylamine and iodic acid in dilute acid and the dry component thereof is an absorbent support impregnated with ferric chloride, an alkali tartrate and an alkali carbonate, and (d) the liquid component for morphine derivatives is sulfuric acid and the dry component thereof is an absorbent support impregnated with hexamethylenetetramine.
Claim 3
Dependent Claim
58 words
A process according to claim 1 wherein the component of the reagent for heroin in liquid form is a solution of benzylamine and 0.1% iodic acid and 1 N HCl and the dry component is paper impregnated with a solution of about 0.5% ferric chloride, about 2.5% sodium tartrate and 15% sodium carbonate in water and then dried.
Claim 4
Dependent Claim
34 words
A process according to claim 1 wherein the component of the reagent for morphine derivatives in liquid form is 65-95% sulfuric acid and the absorbent for the component thereof in dry form is paper.
References Cited (Backward Citations)
US1975245A
Cited
US2986453A
Cited
US3146070A
Cited
US3447904A
Cited
US3378346A
Cited
US3453180A
Cited
US3526479A
Cited
US3656906A
Cited
US3832134A
Cited
US3761227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |