US3976673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-Cyclopropylmethyleneoxy-3-chlorophenylacetic acid and salts thereof
Assignee: ISF SpA
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Filing: 1975-01-09
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Granted: 1976-08-24
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Expires: 1995-01-09
Abstract
Abstract The compound 4-cyclopropylmethyleneoxy-3-chlorophenylacetic acid and its non-toxic pharmaceutically acceptable salts have activity as anti-inflammatory, antipiretic and analgesic agents. It is prepared by reacting a lower alkyl ester of 3-chloro-4-hydroxyphenyl acetic acid with a cyclopropylmethylene halide and subsequently saponifying the ester obtained. The acid obtained is optionally salified to give corresponding non-toxic, inorganic or organic pharmaceutically acceptable salts.
Inventors
- 👤 Giorgio Pifferi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:36
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/72; A; A61; A61P; A61P25/00; A61P25/04; A61P29/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
18 words
4-Cyclopropylmethyleneoxy-3-chlorophenylacetic acid and its non-toxic pharmaceutically acceptable salts of alkali and alkaline earth metals, copper and organic bases.
Claim 2
Dependent Claim
18 words
4-Cyclopropylmethyleneoxy-3-chlorophenylacetic acid and its non-toxic pharmaceutically acceptable salts of alkali and alkaline earth metals, copper and organic bases.
Claim 3
Dependent Claim
2 words
Copper 4-cyclopropylmethyleneoxy-3-chlorophenylacetate.
Claim 4
Dependent Claim
2 words
Copper 4-cyclopropylmethyleneoxy-3-chlorophenylacetate.
Claim 5
Dependent Claim
2 words
DL-lysine 4-cyclopropylmethyleneoxy-3-chlorophenylacetate.
Claim 6
Dependent Claim
2 words
DL-lysine 4-cyclopropylmethyleneoxy-3-chlorophenylacetate.
Claim 7
Dependent Claim
21 words
A composition comprising an excipient plus an analgesically, antipuretically or antiinflammatorily effective amount of the compound as defined in claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |