US2416730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage hydrocarbon conversion system
Assignee: Standard Oil Co
•
Filing: 1942-02-27
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Granted: 1947-03-04
•
Expires: 1962-02-27
Abstract
No abstract record available.
Inventors
- 👤 Maurice H Arveson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:05
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J2219/00; B01J2219/00002; B01J2219/00027; B01J2219/0004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1577534A
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US2277938A
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US2290580A
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US2297774A
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US2300032A
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US2311564A
Cited
US2357136A
Cited
US2304128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |