US3690838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for universal blood alcohol determination
Assignee: MANLEY J LUCKEY
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Filing: 1970-10-19
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Granted: 1972-09-12
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Expires: 1990-10-19
Abstract
Abstract A GAS CHROMATOGRAPH AND METHOD FOR DETERMINATION OF BLOOD ALCOHOL CONTENT FROM BLOOD SAMPLES, URINE SAMPLES, DIRECT BREATH SAMPLES, OR BREATH EXTRACTION SAMPLES, BLOOD OR URINE SAMPLES ARE ANALYZED DIRECTLY IN THE GAS CHROMATOGRAPH, WHICH INCLUDES A SAMPLE-TAKING MECHANISM, INCLUDING A STORAGE LOOP FOR DIRECT BREATH SAMPLING, AND INCLUDES AN AUDIBLE SIGNAL FOR ASSURING THAT THE SAMPLE TAKEN IS OF ALVEOLAR BREATH. A SAMPLE OF ALCOHOL EXTRACTED FROM BREATH IS DISSOLVED IN WATER AND A CHROMATOGRAPHIC ANALYSIS OF ALCHOL VAPOR CONCENTRATION IN THE AIR OVER THE SOLUTION PROVIDES A MEASURE OF BLOOD ALCOHOL CONCENTRATION.
Inventors
- 👤 Manley J Luckey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:20
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/497; G01N33/4972; G01N30/00; G01N30/02; G01N30/88; Y; Y10; Y10S; Y10S436/00; Y10S436/90; Y10T; Y10T436/00; Y10T436/20; Y10T436/203332; Y10T436/204165
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |