Patent US2420904A successfully refreshed from Google Patents.
US2420904A
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Conversion of hydrocarbons
Assignee: ExxonMobil Oil Corp
•
Filing: 1945-03-17
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Granted: 1947-05-20
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Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Henry D Noll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271645A
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US2235133A
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US2356611A
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US2351422A
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US2366218A
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US2322070A
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US2382755A
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US2379711A
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US2356697A
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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) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |