Patent US2445370A successfully refreshed from Google Patents.
US2445370A
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Catalytic cracking of hydrocarbon oils with activated clays
Assignee: Standard Oil Development Co
•
Filing: 1943-08-19
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Granted: 1948-07-20
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Expires: 1963-08-19
Abstract
No abstract record available.
Inventors
- 👤 William E Spicer
- 👤 Jerry A Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:40
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; B; B01; B01J; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |