US2490780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Para-aminobenzamides, acid addition salts thereof, and their production
Assignee: STWB Inc
•
Filing: 1947-05-27
•
Granted: 1949-12-13
•
Expires: 1967-05-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond O Clinton
- 👤 Suter Chester Merle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:48
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2073100A
Cited
US2323075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |