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US3256282A
Expired / Lapsed
US
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4-amino-5-hydroxypyridazones-(6)
Assignee: BASF SE
•
Filing: 1964-10-19
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Granted: 1966-06-14
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Reicheneder Franz
- 👤 Dury Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:15
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A 4-AMINO-5-HYDROXYPYRIDAZONE-(6) HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A 4-AMINO-5-HYDROXYPYRIDAZONE-(6) HAVING THE FORMULA:
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |