US4398029A
Expired / Lapsed
US
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Quinoline carboxylic acid derivatives and process for the preparation
Assignee: Kyorin Pharmaceutical Co Ltd
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Filing: 1981-02-20
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Granted: 1983-08-09
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Expires: 2001-02-20
Abstract
Abstract This invention relates to new compounds of value as antibacterial agent. More particularly, it relates to quinoline carboxylic acid derivatives, the hydrates and the salts thereof.
Inventors
- 👤 Tsutomu Irikura
- 👤 Hiroshi Koga
- 👤 Satoshi Murayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:21
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04; C07D215/00; C07D215/02; C07D215/16; C07D215/48; C07D215/54; C07D215/56
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
10 words
6,8-Difluoro-1-(2-fluoroethyl)-1,4-dihydro-4-oxo-7-(1-piperazinyl)quinoline-3-carboxylic acid, the hydrates, or the pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim
10 words
6,8-Difluoro-1-(2-fluoroethyl)-1,4-dihydro-4-oxo-7-(1-piperazinyl)quinoline-3-carboxylic acid, the hydrates, or the pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
10 words
6,8-Difluoro-1-(2-fluoroethyl)-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxoquinoline-3-carboxylic acid, the hydrates, or the pharmaceutically acceptable salts thereof.
Claim 4
Dependent Claim
10 words
6,8-Difluoro-1-(2-fluoroethyl)-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxoquinoline-3-carboxylic acid, the hydrates, or the pharmaceutically acceptable salts thereof.
Claim 5
Dependent Claim
10 words
6,8-Difluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-1-vinylquinoline-3-carboxylic acid, the hydrates, or the pharmaceutically acceptable salts thereof.
Claim 6
Dependent Claim
10 words
6,8-Difluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-1-vinylquinoline-3-carboxylic acid, the hydrates, or the pharmaceutically acceptable salts thereof.
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) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |