Patent US3707469A successfully refreshed from Google Patents.
US3707469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,9-bis-trifluoromethylquinacridone and intermediate therefor
Assignee: Novartis Corp
•
Filing: 1970-09-22
•
Granted: 1972-12-26
•
Expires: 1990-09-22
Abstract
Abstract THE NOVEL QUINACRIDONE PIGMENT 2,9-BIS-TRIFLUOROMETHYLQUINACRIDONE, IS PREPARED, AS FOR EXAMPLE, BY OXIDATION OF NOVEL INTERMEDIATE 2,9-BIS-TRIFLUOROMETHYL-6,13-DIHYDROQUINACRIDONE.
Inventors
- 👤 Edward E Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:50
CPC Classifications
C; C09; C09B; C09B48/00; C09B67/00; C09B67/0025; C09B67/0027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |