US2939768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alcohol testing reagent
Assignee: Individual
•
Filing: 1957-12-02
•
Granted: 1960-06-07
•
Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Grosskopf Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:54
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; Y; Y10; Y10S; Y10S436/00; Y10S436/90; Y10T; Y10T436/00; Y10T436/20; Y10T436/203332; Y10T436/204165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A PROCESS FOR THE TESTING TUBE DETECTING OF THE ALCOHOL CONTENT IN EXHALED BREATH COMPRISING DRAWING THE EXHALED BREATH THROUGH A TESTING TUBE CONTAINING SILICA GEL ON WHICH HAS BEEN HEAT STABILIZED A COMPOSITION OF POTASSIUM BICHROMATE-SULPHURIC ACID WITH ARSENIC TRIOXIDE AND IODINE, SAID IODINE SERVING A CATALYTIC FUNCTION.
Claim 2
Dependent Claim
49 words
A PROCESS FOR THE TESTING TUBE DETECTING OF THE ALCOHOL CONTENT IN EXHALED BREATH COMPRISING DRAWING THE EXHALED BREATH THROUGH A TESTING TUBE CONTAINING SILICA GEL ON WHICH HAS BEEN HEAT STABILIZED A COMPOSITION OF POTASSIUM BICHROMATE-SULPHURIC ACID WITH ARSENIC TRIOXIDE AND IODINE, SAID IODINE SERVING A CATALYTIC FUNCTION.
Claim 3
Dependent Claim
76 words
A REAGENT FOR THE TESTING OF ALCOHOL IN BREATH EXHALED INTO A TESTING TUBE COMPRISING AN ADMIXTURE OF APPROXIMATELY 3.5 GM. OF POTASSIUM BICHROMATE, AND 100 TO 200 MGM. OF A TRIVALENT ARSENIC COMPOUND IMPREGNATED WITH APPROXIMATELY 300 ML. OF SULPHURIC ACID AND HEAT STABILIZED ON APPROXIMATELY 500 GM. OF SILICA GEL, SAID REAGENT CONTAINING A TRIVALENT CHROME FORMAED BY THE REDUCTION OF A PORTION OF SAID POTASSIUM BICHROMATE IN THE PRESENCE OF SAID ARSENIC COMPOUND.
Claim 4
Dependent Claim
76 words
A REAGENT FOR THE TESTING OF ALCOHOL IN BREATH EXHALED INTO A TESTING TUBE COMPRISING AN ADMIXTURE OF APPROXIMATELY 3.5 GM. OF POTASSIUM BICHROMATE, AND 100 TO 200 MGM. OF A TRIVALENT ARSENIC COMPOUND IMPREGNATED WITH APPROXIMATELY 300 ML. OF SULPHURIC ACID AND HEAT STABILIZED ON APPROXIMATELY 500 GM. OF SILICA GEL, SAID REAGENT CONTAINING A TRIVALENT CHROME FORMAED BY THE REDUCTION OF A PORTION OF SAID POTASSIUM BICHROMATE IN THE PRESENCE OF SAID ARSENIC COMPOUND.
References Cited (Backward Citations)
US2141646A
Cited
US2591691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |