US3758400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic cracking process
Assignee: Phillips Petroleum Co
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Filing: 1971-08-02
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Granted: 1973-09-11
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Expires: 1991-08-02
Abstract
Abstract CRACKING OF HYDROCRBON OILS IN FLUID CATALYTIC CRACKING UNITS IN THE PRESENCE OF A SMALL, BUT FINITE, AMOUNT OF AN AROMATIC CONCENTRATE CONTAINING OLEFINIC HYDROCARBONS RESULTS IN A SUBSTANTIAL INCREASE IN THE PRODUCTION OF HIGHER QUALITY PRODUCTS, ESPECIALLY GASOLINE PRODUCT OF AN INCREASED OCTANE NUMBER.
Inventors
- 👤 J Hampton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
C; C10; C10G; C10G51/00; C10G51/02; C10G51/026; C10G11/00; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/91; Y10S585/949; Y10S585/95
Claims Analysis
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |