Patent US2456072A successfully refreshed from Google Patents.
US2456072A
Expired / Lapsed
US
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Conversion of hydrocarbons in the presence of a catalyst and calcium oxide together with steam and/or carbon dioxide
Assignee: Pure Oil Co
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Filing: 1945-02-12
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Granted: 1948-12-14
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Expires: 1965-02-12
Abstract
No abstract record available.
Inventors
- 👤 Milton M Marisic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:07
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J21/00; B01J21/20; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1711855A
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US2110833A
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US1926587A
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US2244612A
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US2369106A
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US2288873A
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US2288874A
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US2311979A
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US2395931A
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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) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |