US3409541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fluid catalytic cracking of metal contaminated feeds
Assignee: Chevron USA Inc
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Filing: 1966-07-14
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Granted: 1968-11-05
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Expires: 1986-07-14
Abstract
No abstract record available.
Inventors
- 👤 Robert L Flanders
- 👤 Charles E Rudy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:46
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B; B01; B01J; B01J21/00; B01J21/20; B01J8/00; B01J8/18; B01J8/24; B01J8/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |