US2636904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis control process
Assignee: Standard Oil Development Co
•
Filing: 1950-02-28
•
Granted: 1953-04-28
•
Expires: 1970-02-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Starr
- 👤 Elphege M Charlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:48
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2386831A
Cited
US2386830A
Cited
US2459404A
Cited
US2504682A
Cited
US2462995A
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US2462946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |