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US2448015A
Expired / Lapsed
US
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Cracking of hydrocarbons
Assignee: Standard Oil Co
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Filing: 1942-12-12
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Granted: 1948-08-31
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Expires: 1962-12-12
Abstract
No abstract record available.
Inventors
- 👤 Robert E Burk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/08; C10G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172146A
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US2216274A
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US2344789A
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US2357495A
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US2320629A
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US2337432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |