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Serving leading biopharmaceutical companies globally:

Harvard Business School
Federal Trade Commission
Cantor Fitzgerald

Generated: November 18, 2017

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Details for Patent: 4,980,470

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Summary for Patent: 4,980,470

Title: 8-alkoxyquinolonecarboxylic acid and salts thereof
Abstract:Quinolonecarboxylic acid derivatives of the following formula: ##STR1## wherein R indicates a hydrogen atom or lower alkyl group, R.sup.1 indicates a lower alkyl group, R.sup.2 indicates a hydrogen atom, amino group or nitro group, X indicates a halogen atom, and Z indicates a halogen atom, piperazino group, N-methylpiperazino group, 3-methylpiperazino group, 3-hydroxypyrrolidino group, or pyrrolidino group of the following formula, ##STR2## (here, n is 0 or 1, R.sup.3 indicates a hydrogen atom or lower alkyl group, R.sup.4 indicates a hydrogen atom, lower alkyl group and R.sup.5 indicates a hydrogen atom, lower alkyl group, acyl group or alkoxycarbonyl group), the hydrates and pharmaceutically acceptable salts thereof are useful as antibacterial agents.
Inventor(s): Masuzawa; Kuniyoshi (Koga, JP), Suzue; Seigo (Kuki, JP), Hirai; Keiji (Kuki, JP), Ishizaki; Takayoshi (Saitama, JP)
Assignee: Kyorin Pharmaceutical Co., Ltd. (Tokyo, JP)
Application Number:07/003,822
Patent Claim Types:
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Foreign Priority and PCT Information for Patent: 4,980,470

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan61-10880Jan 21, 1986
Japan1-220149Sep 18, 1986

International Patent Family for Patent: 4,980,470

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Hong Kong79797► Subscribe
European Patent Office0230295► Subscribe300110Netherlands► Subscribe
European Patent Office0230295► SubscribeC300110Netherlands► Subscribe
Germany10299006► Subscribe
Germany3789878► Subscribe
Canada1340316► Subscribe
China87100580► Subscribe
China1021052► Subscribe
HungaryT43583► Subscribe
Cyprus2022► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
Johnson and Johnson
Federal Trade Commission

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