US4510310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,4-Dihydro-2,6-dimethyl-4-(2'-chlorophenyl)-3,5-dicarboxylic acid,methyl or ethyl,trifluoroethyl ester
Assignee: Bayer AG
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Filing: 1982-09-30
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Granted: 1985-04-09
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Expires: 2002-09-30
Abstract
Abstract The invention relates to optically active 1,4-dihydropyridine compounds of Formulas Ia and Ib as defined hereinabove which are effective for influencing circulation. Also included in the invention are compositions containing said optically active compounds and methods for the use of said compounds and compositions.
Inventors
- 👤 Egbert Wehinger
- 👤 Horst Meyer
- 👤 Friedrich Bossert
- 👤 Wulf Vater
- 👤 Robertson Towart
- 👤 Kurt Stoepel
- 👤 Stanislay Kazda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/90; A; A61; A61P; A61P25/00; A61P25/02; A61P9/00; A61P9/06; A61P9/08; A61P9/10; A61P9/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
The compound, which is 1,4-dihydro-2,6-dimethyl-4-(2'-chlorophenyl)-pyridine-3,5-dicarboxylic acid, methyl, 2,2,2-trifluoroethyl ester.
Claim 2
Dependent Claim
9 words
The compound, which is 1,4-dihydro-2,6-dimethyl-4-(2'-chlorophenyl)-pyridine-3,5-dicarboxylic acid, methyl, 2,2,2-trifluoroethyl ester.
Claim 3
Dependent Claim
9 words
The compound, which is 1,4-dihydro-2,6-dimethyl-4-(2'-chlorophenyl)-pyridine-3,5-dicarboxylic acid ethyl, 2,2,2-trifluoroethyl di-ester.
Claim 4
Dependent Claim
9 words
The compound, which is 1,4-dihydro-2,6-dimethyl-4-(2'-chlorophenyl)-pyridine-3,5-dicarboxylic acid ethyl, 2,2,2-trifluoroethyl di-ester.
References Cited (Backward Citations)
US3799934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |