US3375256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-substituted-4'-tertiary aminoalkoxy biphenyls
Assignee: Wyeth Holdings LLC
•
Filing: 1966-11-18
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Granted: 1968-03-26
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Expires: 1986-11-18
Abstract
No abstract record available.
Inventors
- 👤 Bach Frederick Louis
- 👤 Barclay John Claire
- 👤 Cohen Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:11
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07C; C07C317/00; C07C317/16; C07C317/22; C07C317/26; C07C317/32; C07C317/34; C07C317/36; C07C317/38; C07C317/40; C07C37/00; C07C37/01; C07C37/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2495772A
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US2748116A
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US2966518A
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US2935439A
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US3196159A
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US3077472A
Cited
US3135745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |