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US2927114A
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US
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3, 3-disubstituted-2, 6-piperazinediones
Assignee: Wyeth Holdings LLC
•
Filing: 1958-11-14
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Granted: 1960-03-01
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Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
- 👤 Patrick T Izzo
- 👤 Safir Sidney Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:20
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/02; C07D241/06; C07D241/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3,3-DISUBSTITUTED-2,6-PIPERAZINEDIONES OF THE FORMULA:
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3,3-DISUBSTITUTED-2,6-PIPERAZINEDIONES OF THE FORMULA:
References Cited (Backward Citations)
US2750383A
Cited
GB779317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |