US3682976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl benzofuran acetic acid compounds
Assignee: Parke Davis and Co LLC
•
Filing: 1970-02-16
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Granted: 1972-08-08
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Expires: 1990-02-16
Abstract
Abstract 3-Phenyl-7-benzofuranacetic acids, 4-phenyl-7-benzofuranacetic acids, 7-phenyl-4-benzofuranacetic acids, 2-methyl-7-phenyl-4benzofuranacetic acids, and 7-phenyl-3-benzofuranacetic acids, optionally substituted in the phenyl group by fluorine or chlorine and on the Alpha -carbon group by lower alkyl; carboxylate salts thereof; and their production by hydrolysis of a correspondingly substituted carboxylic acid precursor or by decarboxylation by heating of a malonic acid precursor. The compounds of the invention are useful as anti-inflammatory agents.
Inventors
- 👤 James S Kaltenbronn
- 👤 Franklin W Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:26
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D307/80
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
11 words
A compound according to claim 1 which is Alpha -methyl-3-phenyl-7-benzofuranacetic acid.
Claim 2
Dependent Claim
10 words
A compound according to claim 1 which is 3-(o-fluorophenyl)-7-benzofuranacetic acid.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 which is 4-phenyl-7-benzofuranacetic acid.
Claim 4
Dependent Claim
10 words
A compound according to claim 1 which is 2-methyl-7-phenyl-4-benzofuranacetic acid.
Claim 5
Dependent Claim
10 words
A compound according to claim 1 which is 7-phenyl-3-benzofuranacetic acid.
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |