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Patent US3470185A successfully refreshed from Google Patents.
US3470185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-(piperazino)methyl-2,3-dihydro-benzofurans
Assignee: BASF Corp
•
Filing: 1968-03-18
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Granted: 1969-09-30
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Expires: 1988-03-18
Abstract
No abstract record available.
Inventors
- 👤 Charles Ferdinand Huebner
- 👤 Lincoln Harvey Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:39
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/06; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3189600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |