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Patent US1850291A successfully refreshed from Google Patents.
US1850291A
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Process of cracking oil
Assignee: Universal Oil Products Co
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Filing: 1928-01-03
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Granted: 1932-03-22
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Expires: 1948-01-03
Abstract
No abstract record available.
Inventors
- 👤 Seguy Jean Delattre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:38
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/38
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |