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US2423907A
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Catalytic conversion of hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1944-12-12
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Granted: 1947-07-15
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Expires: 1964-12-12
Abstract
No abstract record available.
Inventors
- 👤 Walter A Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:07
CPC Classifications
B; B01; B01J; B01J38/00; B01J38/04; B01J38/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2303076A
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US2312006A
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US2244612A
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US2331427A
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US2290845A
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US2300971A
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US2382371A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |