Patent US2909524A successfully refreshed from Google Patents.
US2909524A
Expired / Lapsed
US
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Substituted acetylpiperazines
Assignee: Wyeth Holdings LLC
•
Filing: 1958-04-07
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Granted: 1959-10-20
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Harry P Dalalian
- 👤 Lee N Starker
- 👤 Goldman Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:07
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/42; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/38; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/185; C07D295/20; C07D295/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
COMPOUNDS SELECTED FROM THE GROUP HAVING THE FORMULA:
Claim 2
Dependent Claim
8 words
COMPOUNDS SELECTED FROM THE GROUP HAVING THE FORMULA:
References Cited (Backward Citations)
US2807617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |