US1825374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coking petroleum residues from the distillation of petroleum oils
Assignee: Standard Oil Co
•
Filing: 1928-05-14
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Granted: 1931-09-29
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Expires: 1948-05-14
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Thiele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:15
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/06; C10G; C10G73/00; C10G73/42; C10G9/00; C10G9/42
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) | 1934-09-28 | 1935-03-30 | 1935-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-28 | 1939-03-30 | 1939-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-28 | 1943-03-30 | 1943-09-29 | $7700.00 | Window Closed / Lapsed |