US3746512A
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US
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Apparatus and method for determining the alcoholic content of breath
Assignee: Toshiba Corp
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Filing: 1971-07-14
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Granted: 1973-07-17
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Expires: 1991-07-14
Abstract
Abstract AN APPARATUS AMD METHOD FOR DETERMINING THE ALCOHOLIC CONTENT OF BREATH COMPRISING AN ALCOHOL ADSORBENT; MEANS FOR HEATING THE ADSORBENT; A HYDROGEN GAS FILTER CONSISTING OF, FOR EXAMPLE, PALLADIUM; MEANS FOR HEATING THE FILTER; A GUIDE PIPE FOR CONDUCTING THE HYDROGEN THERMALLY DECOMPOSED FROM ALCOHOL TO THE HYDROGEN GAS FILTER; AND A VACUUM VESSEL PROVIDED WITH A DEVICE FOR DETERMINING THE AMOUNTS OF HYDROGEN PERMEATING THE FILTER.
Inventors
- 👤 H Kamei
- 👤 J Koezuka
- 👤 M Imooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:56
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/497; G01N33/4972; G01N27/00; G01N27/62; G01N27/68; G01N27/70; G01N7/00; G01N7/14; Y; Y10; Y10S; Y10S436/00; Y10S436/90; Y10T; Y10T436/00; Y10T436/20; Y10T436/203332; Y10T436/204165; Y10T436/25; Y10T436/25375; Y10T436/255
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |