Patent US2430333A successfully refreshed from Google Patents.
US2430333A
Expired / Lapsed
US
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Paraffin alkylation in the presence of hydrogen fluoride
Assignee: ExxonMobil Oil Corp
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Filing: 1945-06-22
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Granted: 1947-11-04
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Expires: 1965-06-22
Abstract
No abstract record available.
Inventors
- 👤 Stuart T Hadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:01
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2173452A
Cited
US2317241A
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US2311144A
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US2365426A
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US2380010A
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US2378040A
Cited
US2378439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |