Patent US584205A successfully refreshed from Google Patents.
Patent US3485847A successfully refreshed from Google Patents.
US3485847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-aryl-1,4-dihydropyridines
Assignee: Bayer AG
•
Filing: 1968-03-13
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Granted: 1969-12-23
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Expires: 1988-03-13
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Bossert
- 👤 Wulf Vater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:05
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |