Patent US2240347A successfully refreshed from Google Patents.
US2240347A
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US
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Catalytic conversion system
Assignee: Standard Oil Co
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Filing: 1938-12-31
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Granted: 1941-04-29
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Expires: 1958-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr James M Page
- 👤 Voorhees Vanderveer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:45
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
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) | 1944-04-28 | 1944-10-28 | 1945-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-28 | 1948-10-28 | 1949-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-28 | 1952-10-28 | 1953-04-29 | $7700.00 | Window Closed / Lapsed |