US2455419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of hydrocarbons and regeneration of synthesis catalyst
Assignee: Standard Oil Co
•
Filing: 1944-10-11
•
Granted: 1948-12-07
•
Expires: 1964-10-11
Abstract
No abstract record available.
Inventors
- 👤 Everett A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:03
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0485; C07C1/049; C07C1/0425; C07C1/045; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB509325A
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GB191327233A
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US1828734A
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US2198560A
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US2365094A
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US2331433A
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US2348418A
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US2360787A
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US2353495A
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US2376191A
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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) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |