US2309034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cooling fluid catalysts
Assignee: STANDARD CATALYTIC CO
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Filing: 1941-03-01
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Granted: 1943-01-19
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Expires: 1961-03-01
Abstract
No abstract record available.
Inventors
- 👤 Frank T Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; B01J8/1881; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00026; B01J2208/00035; B01J2208/00088; B01J2208/00106; B01J2208/00265; B01J2208/00292; 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) | 1946-01-18 | 1946-07-20 | 1947-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-18 | 1950-07-20 | 1951-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-18 | 1954-07-20 | 1955-01-19 | $7700.00 | Window Closed / Lapsed |