US2581014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for methylation of aromatics
Assignee: ExxonMobil Oil Corp
•
Filing: 1945-12-11
•
Granted: 1952-01-01
•
Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Manuel H Gorin
- 👤 Gorin Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:55
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; B01J21/12; C; C07; C07C; C07C2/00; C07C2/86; C07C2/861; C07C2521/00; C07C2521/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2164334A
Cited
US2410111A
Cited
US2368446A
Cited
US2364762A
Cited
US2402092A
Cited
US2352200A
Cited
US2384505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |