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Patent US3494932A successfully refreshed from Google Patents.
US3494932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoalkyl substituted aryl hydantoins
Assignee: Wyeth Holdings LLC
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Filing: 1967-06-26
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Granted: 1970-02-10
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Expires: 1987-06-26
Abstract
No abstract record available.
Inventors
- 👤 Herbert Joseph Brabander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:57
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/06; A; A61; A61K; A61K31/00; A61K31/33; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D403/00; C07D403/02; C07D403/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |