Patent US3905997A successfully refreshed from Google Patents.
US3905997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-Aryl-5-oxo-2-pyrazoline-4-carboxanilides and process therefor
Assignee: Warner Lambert Co LLC
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Filing: 1974-06-21
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Granted: 1975-09-16
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Expires: 1994-06-21
Abstract
Abstract Compounds of the formula; WHEREIN R1 is alkyl or aryl; R2 is aryl; and R3 is alkyl, alkoxy, halogen, trifluoromethyl, carboalkoxyl, cyano, and the like. These compounds are indicated in the management of inflammatory conditions such as rheumatoid arthritis.
Inventors
- 👤 Harold Zinnes
- 👤 Neil A Lindo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:40
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/18; C07D231/20; C07D231/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
14 words
A compound according to claim 1 which is 5-oxo-1,3-diphenyl-2-pyrazoline-4-carboxanilide or its alkali metal salts.
Claim 4
Dependent Claim
14 words
A compound according to claim 1 which is 1-methyl-5-oxo-3-phenyl-2-pyrazoline-4-carboxanilide or its alkali metal salts.
Claim 5
Dependent Claim
20 words
A process for the preparation of the compound according to claim 1 which comprises reacting a compound of 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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |