US2051774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion process and apparatus for catalytic chemical reactions
Assignee: EIDP Inc
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Filing: 1932-11-03
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Granted: 1936-08-18
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Expires: 1952-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert V Kleinschmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/152
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) | 1939-08-18 | 1940-02-17 | 1940-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-18 | 1944-02-17 | 1944-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-18 | 1948-02-17 | 1948-08-18 | $7700.00 | Window Closed / Lapsed |