US2471104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated hydrocarbons and hydrogen
Assignee: Standard Oil Development Co
•
Filing: 1944-11-10
•
Granted: 1949-05-24
•
Expires: 1964-11-10
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Gohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:15
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/38; B01J8/384; B01J8/388; C07C2/00; C07C2/76
Claims Analysis
Total Claims: 0
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US2405395A
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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) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |