US3738810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Octane analyzer
Assignee: Chevron USA Inc
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Filing: 1971-08-31
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Granted: 1973-06-12
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Expires: 1991-08-31
Abstract
Abstract MEANS TO DETERMINE A CHARACTERISTIC OF A HYDROCARBON, SUCH AS THE OCTANE RATING OF GASOLINE, BY REACTING A SAMPLE OFTHE HYDROCARBON WITH AN OXYGEN CONTAINING GAS, SUCH AS AIR, UNDER CERTAIN CONDITIONS TO MAINTAIN A MILD REACTION LESS VIRGOROUS THAN AN EXPLOSION. THE TIME ELASPED BETWEEN INJECTION OF THE HYDROCARBON INTO THE GAS STREAM AND REACTION OF THE HYDROCARBON INTO THE GAS STREAM GAS, AND/OR SOME FACET OF THE SEVERITY OF THEREACTION, ARE CORRELATABLE TO THE VALUE OF THE CHARACTERISTIC OF INTEREST OF THAT HYDROCARBON.
Inventors
- 👤 Iii R Clinton
- 👤 T Puzniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:14
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/005; G01N33/00; G01N33/26; G01N33/28; G01N33/2829; Y; Y10; Y10T; Y10T436/00; Y10T436/21; Y10T436/214
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |