US2416049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of spent catalyst
Assignee: Phillips Petroleum Co
•
Filing: 1942-10-05
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Granted: 1947-02-18
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Expires: 1962-10-05
Abstract
No abstract record available.
Inventors
- 👤 Arch L Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:48
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C10; C10G; C10G11/00; C10G11/02; C10G11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB192106A
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US1620075A
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GB374597A
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US2289731A
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US2348701A
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US2293891A
Cited
US2317494A
Cited
US2348408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |