US2589925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon synthesis
Assignee: Standard Oil Development Co
•
Filing: 1947-05-09
•
Granted: 1952-03-18
•
Expires: 1967-05-09
Abstract
No abstract record available.
Inventors
- 👤 Virginia L Cain
- 👤 Charles E Hemminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C1/044; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/76; C07C2523/78; C07C2527/00; C07C2527/20; C07C2527/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1148570A
Cited
US2369548A
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US2409235A
Cited
US2417164A
Cited
US2393909A
Cited
US2445796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |