US3725007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test tube for the quantitative detection of the alcoholic strength ofrespiratory air and method for the preparation of said tube
Assignee: Jenapharm GmbH and Co KG
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Filing: 1971-01-28
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Granted: 1973-04-03
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Expires: 1991-01-28
Abstract
Abstract A TEST TUBE FOR THE QUANTITATIVE DETECTION OF THE ALCOHOL CONTENT OF BREATH BY MEANS OF BICHROMATE-SULPHURIC ACID. THE TEST TUBE CONTAINS A CARRIER MATERIAL CONSISTING OF SILICA-GEL POWDER BONDED TO GLASS PARTICLES AND SATURATED WITH A REAGENT FOR INDICATING THE ALCOHOL CONTENT. THE TEST TUBE IS PROVIDED WITH A SCALE IN THE REGION OF THE REAGENT FOR INDICATING THE ALCOHOL CONTENT FOR TE DETERMINATION BY LINEAR COLORIMETRIC MEANS OF THE AMOUNT OF ALCOHOL CONTAINED IN THE BREATH.
Inventors
- 👤 E Kral
- 👤 D Eschrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:35
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N33/00; G01N33/48; G01N33/50; G01N33/52
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |