Patent US2410284A successfully refreshed from Google Patents.
US2410284A
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US
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Catalytic cracking system
Assignee: MW Kellogg Co
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Filing: 1941-04-24
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Granted: 1946-10-29
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Expires: 1961-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert C Gunness
- 👤 Joseph W Jewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
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) | 1949-10-28 | 1950-04-29 | 1950-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-28 | 1954-04-29 | 1954-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-28 | 1958-04-29 | 1958-10-29 | $7700.00 | Window Closed / Lapsed |