Patent US2220261A successfully refreshed from Google Patents.
US2220261A
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Conversion of carbon monoxide with hydrogen
Assignee: WILLIAM E CURRIE
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Filing: 1938-08-19
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Granted: 1940-11-05
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Expires: 1958-08-19
Abstract
No abstract record available.
Inventors
- 👤 Michael Wilhelm
- 👤 Jaeckh Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:13
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/06; C07C1/063; C07C1/066; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/745
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) | 1943-11-05 | 1944-05-06 | 1944-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-05 | 1948-05-06 | 1948-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-05 | 1952-05-06 | 1952-11-05 | $7700.00 | Window Closed / Lapsed |