US2384874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon synthesis reaction
Assignee: STANDARD CATALYTIC CO
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Filing: 1941-05-02
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Granted: 1945-09-18
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Expires: 1961-05-02
Abstract
No abstract record available.
Inventors
- 👤 Frank T Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:13
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/0242; B01J8/0257; B01J8/0207; B01J8/04; B01J8/0496; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00168; B01J2208/00194
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) | 1948-09-17 | 1949-03-19 | 1949-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-17 | 1953-03-19 | 1953-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-17 | 1957-03-19 | 1957-09-18 | $7700.00 | Window Closed / Lapsed |