US2635952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydrogen-carbon monoxide mixture
Assignee: Standard Oil Co
•
Filing: 1946-07-05
•
Granted: 1953-04-21
•
Expires: 1966-07-05
Abstract
No abstract record available.
Inventors
- 👤 Ouville Edmond L D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:15
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/24; C01B3/28; B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0403; B01J8/0423; B01J8/0438; B01J8/18; B01J8/1845; B01J8/1854; C01B3/32; C01B3/34; C01B3/38
Claims Analysis
Total Claims: 0
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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) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |