Patent US3483266A successfully refreshed from Google Patents.
US3483266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal dealkylation of alkyl aromatic compounds employing a hydrogen donor and molecular hydrogen
Assignee: Monsanto Co
•
Filing: 1966-12-20
•
Granted: 1969-12-09
•
Expires: 1986-12-20
Abstract
No abstract record available.
Inventors
- 👤 James C Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:42
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2381522A
Cited
US2929775A
Cited
US3102151A
Cited
US2994726A
Cited
US3177262A
Cited
US3198846A
Cited
US3145238A
Cited
US3296323A
Cited
US3193595A
Cited
US3288873A
Cited
US3288875A
Cited
US3284527A
Cited
US3256357A
Cited
US3320332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |