Patent US1411298A successfully refreshed from Google Patents.
Patent US3351841A successfully refreshed from Google Patents.
US3475431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-aminophenyl-and 6-acylaminophenyl-4,5-dihydropyridazones-(3)
Assignee: BASF SE
•
Filing: 1966-12-28
•
Granted: 1969-10-28
•
Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Bachmann
- 👤 August Amann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:40
CPC Classifications
C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/14; C07D237/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3045014A
Cited
US3193552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |