Patent US2423401A successfully refreshed from Google Patents.
US2423401A
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US
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Alkylation of isoparaffins
Assignee: ExxonMobil Oil Corp
•
Filing: 1943-03-16
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Granted: 1947-07-01
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Expires: 1963-03-16
Abstract
No abstract record available.
Inventors
- 👤 Arlie A O'kelly
- 👤 Robert H Work
- 👤 Plucker Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:13
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/60; C07C2/62; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C07C2527/06; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2002394A
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US2209450A
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US2265548A
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GB540824A
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US2276251A
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US2323616A
Cited
US2322664A
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US2324099A
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US2384294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |