US3418373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aromatic diamine mixtures
Assignee: Monsanto Co
•
Filing: 1965-04-12
•
Granted: 1968-12-24
•
Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Charles G Summers
- 👤 Robert L Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:30
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |