US2469334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haloalkylation of aromatic hydrocarbons
Assignee: ExxonMobil Oil Corp
•
Filing: 1945-03-31
•
Granted: 1949-05-03
•
Expires: 1965-03-31
Abstract
No abstract record available.
Inventors
- 👤 Howard D Hartough
- 👤 Paul K Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1727682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |