US3470182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-amino-substituted quinazolines
Assignee: Sandoz AG
•
Filing: 1967-02-09
•
Granted: 1969-09-30
•
Expires: 1987-02-09
Abstract
No abstract record available.
Inventors
- 👤 Goetz E Hardtmann
- 👤 Hans Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:17
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12; C07D239/00; C07D239/70; C07D239/72; C07D239/86; C07D239/94; C07D403/00; C07D403/02; C07D403/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3184462A
Cited
US3301855A
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 |