US2418023A
Expired / Lapsed
US
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Catalytic reconstruction of hydrocarbons
Assignee: Phillips Petroleum Co
•
Filing: 1943-11-26
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Granted: 1947-03-25
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Expires: 1963-11-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:43
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C4/00; C07C4/02; C07C4/06; C07C5/00; C07C5/02; C07C5/03; C07C5/13; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/1213; C07C2527/122; C07C2527/128; C07C2527/132; C07C2527/133; C07C2527/135; C07C2527/138
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1843880A
Cited
US2172146A
Cited
US2271043A
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US2216221A
Cited
US2293891A
Cited
US2357495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |