US2283211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quinoline-azo compounds
Assignee: ER Squibb and Sons LLC
•
Filing: 1939-12-23
•
Granted: 1942-05-19
•
Expires: 1959-12-23
Abstract
No abstract record available.
Inventors
- 👤 William S Jones
- 👤 Braker William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:16
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/24
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) | 1945-05-18 | 1945-11-17 | 1946-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-18 | 1949-11-17 | 1950-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-18 | 1953-11-17 | 1954-05-19 | $7700.00 | Window Closed / Lapsed |