US3746513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemiluminescent process
Assignee: Ford Motor Co
•
Filing: 1971-05-26
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Granted: 1973-07-17
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Expires: 1991-05-26
Abstract
Abstract CONCENTRATIONS OF NITRIC OXIDE IN GASEOUS MIXTURES ARE DETERMINED BY MEASURING THE CHEMILUMINESCENCE OF THE REACTION BETWEEEN THE NITRIC OXIDE, AND OZONE. THE GASEOUS MIXTURE IS INTRODUCED WITH VIRTUALLY LAMINAR FLOW INTO A REACTION CHAMBER AT A LOCATION PROXIMATE TO THE INNER SURFACE OF ALIGHT TRANSMITTING ELEMENT. REACTION CHAMBER PRESSURE PREFERABLY IS MAINTAINED ABOVE ABOUT 5 TORR. D R A W I N G
Inventors
- 👤 A Warnick
- 👤 A Colvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:02
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 |