US2537472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for carrying out an exothermic reaction at substantially constant temperature
Assignee: Compagnie Francaise de Raffinage SA
•
Filing: 1945-12-15
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Granted: 1951-01-09
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Expires: 1965-12-15
Abstract
No abstract record available.
Inventors
- 👤 Massiot Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:30
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00074; B01J2219/00087; B01J2219/00101; B01J2219/00159; B01J2219/00164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391315A
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US804516A
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US1231123A
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US1894768A
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US2064317A
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US2192124A
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US2195414A
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US2219214A
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US2403179A
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US2356785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |