US2448223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-temperature distillation of fuels by direct contact with reheated distillate vapors
Assignee: Azote et Produits Chimiques SA
•
Filing: 1937-06-23
•
Granted: 1948-08-31
•
Expires: 1957-06-23
Abstract
No abstract record available.
Inventors
- 👤 Lants Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:38
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/06; C10B1/00; C10B1/02; C10B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1805109A
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US1838622A
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GB283259A
Cited
US1937552A
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US2167099A
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US2131702A
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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) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |