Patent US2215498A successfully refreshed from Google Patents.
US2215498A
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Process for controlling vapor phase hydrocarbon reactions
Assignee: Solvay Process Co
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Filing: 1938-06-08
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Granted: 1940-09-24
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Expires: 1958-06-08
Abstract
No abstract record available.
Inventors
- 👤 Charles S Fazel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:23
CPC Classifications
F; F23; F23C; F23C99/00; B; B01; B01J; B01J19/00; B01J19/0006; F23C2700/00; F23C2700/04; Y; Y10; Y10T; Y10T436/00; Y10T436/12
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) | 1943-09-24 | 1944-03-25 | 1944-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-24 | 1948-03-25 | 1948-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-24 | 1952-03-25 | 1952-09-24 | $7700.00 | Window Closed / Lapsed |