US3577440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-substituted-3-amido-pyrrolidines
Assignee: AH Robins Co Inc
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Filing: 1969-11-07
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Granted: 1971-05-04
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Expires: 1989-11-07
Abstract
Abstract 1-SUBSTITUTED-3-AMIDOPYRROLIDIENS USEFUL AS ANALGETICS AND ANTI-DEPRESSANTS ARE DISCLOSED. THE COMPOUNDS ARE PREPARED BY ACYLATION OF 1-SUBSTITUTED-3-AMINOPYRROLIDINES.
Inventors
- 👤 Carl Dalton Lunsford
- 👤 Grover Cleveland Helsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:49
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/10; C07D207/14
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |