Patent US2807617A successfully refreshed from Google Patents.
US2807617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylpiperazines and methods of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1955-05-11
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Granted: 1957-09-24
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Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Harry P Dalalian
- 👤 Kushner Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:58
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND SELECTED FROM THE GROUP OF THOSE HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
A COMPOUND SELECTED FROM THE GROUP OF THOSE HAVING THE FORMULA
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |