US2831892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(3-isopropylaminopropyl) diphenyl-acetamide and processes
Assignee: GD Searle LLC
•
Filing: 1956-03-22
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Granted: 1958-04-22
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Expires: 1976-03-22
Abstract
No abstract record available.
Inventors
- 👤 Clinton A Dornfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |