Patent US2611118A successfully refreshed from Google Patents.
US2480240A
Expired / Lapsed
US
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Alkylation of isoparaffins
Assignee: Sunoco Inc
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Filing: 1945-11-20
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Granted: 1949-08-30
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Expires: 1965-11-20
Abstract
No abstract record available.
Inventors
- 👤 James I Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:20
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2374996A
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US2306253A
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US2399240A
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US2384311A
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US2391160A
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US2385133A
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US2374819A
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US2375867A
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US2398101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |