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Generated: October 20, 2017

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Details for Patent: 4,359,578

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Summary for Patent: 4,359,578

Title: Naphthyridine derivatives and salts thereof useful as antibacterial agents
Abstract:This invention relates to 1,8-naphthyridine compounds of the formula ##STR1## wherein X is a halogen atom especially fluorine atom, R.sub.1 is an ethyl group or a vinyl group, and R.sub.2 is a hydrogen atom or a lower alkyl group, their salts and processes for the preparation of them. The 1,8-naphthyridine compounds and their salts are useful as antibacterial agents and intermediates thereof.
Inventor(s): Matsumoto; Jun-ichi (Takatsuki, JP), Takase; Yoshiyuki (Amagasaki, JP), Nishimura; Yoshiro (Neyagawa, JP)
Assignee: Dainippon Pharmaceutical Co., Ltd. (Osaka, JP) Laboratoire Roger Bellon (Neuilly sur Seine, FR)
Application Number:06/068,966
Patent Claim Types:
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Foreign Priority and PCT Information for Patent: 4,359,578

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan53/104235Aug 25, 1978
Japan157939Dec 20, 1978
Japan53/162095Dec 29, 1978

International Patent Family for Patent: 4,359,578

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Mexico6111► Subscribe
JapanS6130675► Subscribe
JapanS5592385► Subscribe
JapanS5583785► Subscribe
JapanS5710109► Subscribe
JapanS5531042► Subscribe
India158225► Subscribe
India158226► Subscribe
India154878► Subscribe
Hungary179927► 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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