US2337732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiating light hydrocarbon distillates
Assignee: Standard Oil Co
•
Filing: 1940-07-09
•
Granted: 1943-12-28
•
Expires: 1960-07-09
Abstract
No abstract record available.
Inventors
- 👤 Robert E Burk
- 👤 Everett C Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/12; C10G21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-12-27 | 1947-06-28 | 1947-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-27 | 1951-06-28 | 1951-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-27 | 1955-06-28 | 1955-12-28 | $7700.00 | Window Closed / Lapsed |