US2462792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation process
Assignee: Pan American Refining Corp
•
Filing: 1945-08-09
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Granted: 1949-02-22
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Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Francis T Wadsworth
- 👤 Robert J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:23
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2531/00; C07C2531/02; C07C2531/025; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901; Y10S585/902; Y10S585/903; Y10S585/949; Y10S585/954
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1741472A
Cited
US2014766A
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US2390836A
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US2390835A
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US2395976A
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US2386892A
Cited
US2385303A
Cited
US2411578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |