US2436151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of aromatic hydrocarbons by contact with heat-stable metal halide catalysts
Assignee: ExxonMobil Oil Corp
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Filing: 1942-12-17
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Granted: 1948-02-17
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Expires: 1962-12-17
Abstract
No abstract record available.
Inventors
- 👤 Arlie A O'kelly
- 👤 Robert H Work
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:25
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/128; C07C2527/138; C07C2531/00; C07C2531/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009108A
Cited
US2244512A
Cited
US2324784A
Cited
US2402847A
Cited
US2361065A
Cited
US2373030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |