US2903414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic cracking process
Assignee: Pure Oil Co
•
Filing: 1955-10-25
•
Granted: 1959-09-08
•
Expires: 1975-10-25
Abstract
No abstract record available.
Inventors
- 👤 Milton M Marisic
- 👤 Henning Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:08
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2390556A
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US2345487A
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US2406394A
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US2415998A
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US2444545A
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US2526068A
Cited
US2730557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |