US2459449A
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US
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Catalytic dehydrogenation of olefinic hydrocarbons while maintaining the potassium content of the catalyst
Assignee: Standard Oil Development Co
•
Filing: 1946-06-10
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Granted: 1949-01-18
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Expires: 1966-06-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Oliver
- 👤 Charles F Van Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78; B01J23/90; B01J23/94; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172534A
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US2265641A
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US2367623A
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US2395875A
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US2391160A
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US2385484A
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US2408139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |