Patent US2023783A successfully refreshed from Google Patents.
US3280141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-nitropyrazole carboxylic acids-(5)
Assignee: BASF SE
•
Filing: 1964-12-30
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Granted: 1966-10-18
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Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Reicheneder Franz
- 👤 Dury Johanna Maria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:52
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A 4-NITROPYRAZOLE-5-CARBOXYLIC ACID HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A 4-NITROPYRAZOLE-5-CARBOXYLIC ACID 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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |