Patent US4013690A successfully refreshed from Google Patents.
US4013690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic compounds
Assignee: Sandoz AG
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Filing: 1975-01-30
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Granted: 1977-03-22
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Expires: 1995-01-30
Abstract
Abstract This invention provides compounds of formula I, ##STR1## wherein R 1 is alkyl of 1 to 10 carbon atoms, cycloalkyl of 3 to 8 carbon atoms or phenyl, and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms, Useful as anti-phlogistics, anti-pyretics, analagesics and inhibitors of blood platelet aggregation.
Inventors
- 👤 Annemarie Closse
- 👤 Walter Haefliger
- 👤 Daniel Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:11
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/194; C07C; C07C327/00; C07C43/00; C07C43/02; C07C43/20; C07C43/205; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/84; C07C59/00; C07C59/40; C07C59/42; C07C59/48; C07C59/52; C07C59/54; C07C59/58; C07C59/64; C07C59/72; C07D307/00; C07D307/77; C07D307/78; C07D307/82; C07D307/83
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
32 words
A compound of formula I, ##STR13## wherein R 1 is cycloalkyl of 3 to 8 carbon atoms or phenyl, and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms.
Claim 2
Dependent Claim
32 words
A compound of formula I, ##STR13## wherein R 1 is cycloalkyl of 3 to 8 carbon atoms or phenyl, and R 2 is hydrogen or alkyl of 1 to 4 carbon atoms.
Claim 3
Dependent Claim
10 words
A compound of claim 1 wherein R 2 is hydrogen.
Claim 4
Dependent Claim
10 words
A compound of claim 1, wherein R 2 is methyl.
Claim 5
Dependent Claim
10 words
A compound of claim 2 wherein R 1 is cycloalkyl.
Claim 6
Dependent Claim
10 words
A compound of claim 2 wherein R 1 is phenyl.
Claim 7
Dependent Claim
8 words
The compound of claim 1 which is 6-cyclohexyl-2,3-dihydro-benzofuran-2-one.
Claim 8
Dependent Claim
8 words
The compound of claim 1 which is 6-cyclopentyl-2,3-dihydro-benzofuran-2-one.
Claim 9
Dependent Claim
8 words
The compound of claim 1 which is 2,3-dihydro-6-phenyl-benzofuran-2-one.
Claim 10
Dependent Claim
8 words
The compound of claim 1 which is 6-cyclohexyl-2,3-dihydro-3-methyl-benzofuran-2-one.
References Cited (Backward Citations)
DE1014962B
Cited
US3829446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |