US2537620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for desulfurizing petroleum oils
Assignee: Standard Oil Development Co
•
Filing: 1947-09-09
•
Granted: 1951-01-09
•
Expires: 1967-09-09
Abstract
No abstract record available.
Inventors
- 👤 Richard C Brandon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:39
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2126503A
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US2109446A
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US2206921A
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US2180372A
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US2391091A
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US2340922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |