US2294380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo compound
Assignee: ER Squibb and Sons LLC
•
Filing: 1939-12-23
•
Granted: 1942-09-01
•
Expires: 1959-12-23
Abstract
No abstract record available.
Inventors
- 👤 Braker William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:38
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0025; C09B29/0029; C09B29/0048
Claims Analysis
Total Claims: 0
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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) | 1945-08-31 | 1946-03-02 | 1946-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-31 | 1950-03-02 | 1950-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-31 | 1954-03-02 | 1954-09-01 | $7700.00 | Window Closed / Lapsed |