US2529283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a silica-aluminamagnesia catalyst
Assignee: Standard Oil Development Co
•
Filing: 1946-06-20
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Granted: 1950-11-07
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Expires: 1966-06-20
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Corner
- 👤 Kenneth K Kearby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/14; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2281919A
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US2270090A
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US2371069A
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US2340934A
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US2343295A
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US2390556A
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US2399261A
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US2440743A
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US2387596A
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US2459987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |