US2540587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hydrocarbons
Assignee: Standard Oil Development Co
•
Filing: 1946-02-07
•
Granted: 1951-02-06
•
Expires: 1966-02-07
Abstract
No abstract record available.
Inventors
- 👤 James B Litton
- 👤 James C Schiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:44
CPC Classifications
C; C07; C07C; C07C11/00; C07C1/00; C07C1/02; C07C1/04; C07C1/0485; C07C1/20; C07C1/24; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/70; C07C2523/74; Y; Y10; Y10S; Y10S208/00; Y10S208/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US735276A
Cited
GB278353A
Cited
US1873537A
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US1979841A
Cited
US2264427A
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US2403524A
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US2324172A
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US2450500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |