Patent US3714024A successfully refreshed from Google Patents.
US3714024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of catalytic cracking of hydrocarbons
Assignee: Texaco Inc
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Filing: 1969-12-31
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Granted: 1973-01-30
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Expires: 1989-12-31
Abstract
Abstract IN A FLUID CATALYTIC CRACKING UNIT EMPLOYING A MULTIPLICITY OF ELONGATED REACTION ZONES, SIGNIFICANT IMPROVEMENTS ARE OBTAINED BY INTRODUCING FRESH FEED TO EACH OF THE ELONGATED REACTION ZONE AND OPERATING AT LEAST ONE AT A HIGHER TEMPERATURE THEN AT LEAST ONE OTHER WHILE MAINTAINING THE CONVERSATION IN THE HIGHER TEMPERATURE ZONE EQUIVALENT TO OR LOWER THAN THE CONVERSATION IN THE LOWER TEMPERATURE REACTION ZONE. OPTIONALLY, THE VAPOROUS EFFLUENT FROM EITHER OR BOTH REACTION ZONE MAY BE SUBJECTED TO FURTHER CRACKING IN THE DENSE PHASE OF CATALYST IN THE REACTION VESSEL. HIGHER YIELDS OF HIGHER OCTANE GASOLINE ARE OBTAINED WHERE THE UNIT IS OPERATED IN THE DISCLOSED MANNER.
Inventors
- 👤 D Youngblood
- 👤 D Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:12
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |