Patent US5721154A successfully refreshed from Google Patents.
Patent US4532250A successfully refreshed from Google Patents.
US4532250A
Expired / Lapsed
US
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5-Heteroarylimidazol-2-ones having cardiotonic activity
Assignee: Bristol Myers Squibb Pharma Co
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Filing: 1983-11-23
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Granted: 1985-07-30
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Expires: 2003-11-23
Abstract
Abstract Described are compounds of the formula ##STR1## wherein R is heteroaryl and R 1 is hydrogen or loweralkyl, or a pharmaceutically acceptable salt thereof. The compounds exhibit cardiotonic activity.
Inventors
- 👤 David M. Stout
- 👤 Diane M. Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:12
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/44; C07D213/53; C07D213/46; C07D213/50; C07D401/00; C07D401/02; C07D401/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
63 words
A method of treating or relieving the symptoms associated with cardiac insufficiency in a patient by a selective increase in the cardiac contractile force comprising administering to a patient in need of such a treatment a therapeutically effective amount of a compound of the formula ##STR6## wherein R is pyridyl and R 1 is hydrogen or loweralkyl, or a pharmaceutically acceptable salt thereof.
Claim 2
Independent Claim
63 words
A method of treating or relieving the symptoms associated with cardiac insufficiency in a patient by a selective increase in the cardiac contractile force comprising administering to a patient in need of such a treatment a therapeutically effective amount of a compound of the formula ##STR6## wherein R is pyridyl and R 1 is hydrogen or loweralkyl, or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
14 words
The method of claim 1 where R is pyridyl and R 1 is loweralkyl.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein R 1 is methyl.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |