US3746514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemiluminescent instrument
Assignee: Ford Motor Co
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Filing: 1971-05-26
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Granted: 1973-07-17
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Expires: 1991-05-26
Abstract
Abstract GASEOUS MIXTURES CONTAINING AN UNKNOWN QUANTITY OF NITRIC OXIDE ARE INTRODUCED INTO A CYLINDRICAL REACTION CHAMBER AT A LOCATION PROXIMATE TO THE INNER SURFACE OF A LIGHT TRANSMITTING ELEMENT FORMING ONE END OF THE REACTION CHAMBER. OZONE ALSO IS INTRODUCED INTO THE REACTION CHAMBER AND THE CHEMILUMINESCENCE TRANSMITTED THROUGH THE LIGHT TRANSMITTING ELEMENT FROM THE RESULTING REACTION IS MEASURED WITH A PHOTOMULTIPLIER TUBE. REACTION CHAMBER PRESSURE PREFERABLY IS MAINTAINED ABOVE ABOUT 5 TORR.
Inventors
- 👤 A Colvin
- 👤 A Warnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:33
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/76; G01N21/766; F; F21; F21K; F21K2/00; F21K2/06; Y; Y10; Y10T; Y10T436/00; Y10T436/17; Y10T436/177692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3285703A
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US3245758A
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US3287089A
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US3520660A
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US3615241A
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US3647387A
Cited
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 |