US2373358A
Expired / Lapsed
US
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Catalytic process and apparatus
Assignee: Phillips Petroleum Co
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Filing: 1943-12-31
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Granted: 1945-04-10
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Expires: 1963-12-31
Abstract
No abstract record available.
Inventors
- 👤 John D Upham
- 👤 Wolk I Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B; B01; B01J; B01J8/00; B01J8/02; B01J8/18; B01J8/24; B01J8/26; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00327; B01J2208/00336; B01J2208/00353; B01J2208/00371; B01J2208/00513; B01J2208/0053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-04-09 | 1948-10-09 | 1949-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-09 | 1952-10-09 | 1953-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-09 | 1956-10-09 | 1957-04-10 | $7700.00 | Window Closed / Lapsed |