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Serving leading biopharmaceutical companies globally:

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Generated: November 23, 2017

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Details for Patent: 5,053,407

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Summary for Patent: 5,053,407

Title: Optically active pyridobenzoxazine derivatives and anti-microbial use
Abstract:An optically action pyridobenzoxazine derivative, a process for preparing the same and a novel intermediate useful for preparing the optically active pyridobenzoxazine derivative are disclosed. The optically active pyridobenzoxazine derivative possesses increased antimicrobial activity and reduced toxicity. The intermediate is useful for preparing such optically active pyridobenzoxazine derivatives such as Ofloxacin and anolog compounds.
Inventor(s): Hayakawa; Isao (Tokyo, JP), Atarashi; Shohgo (Tokyo, JP), Imamura; Masazumi (Tokyo, JP), Yokohama; Shuichi (Tokyo, JP), Higashihashi; Nobuyuki (Tokyo, JP), Sakano; Katsuichi (Tokyo, JP), Ohshima; Masayuki (Tokyo, JP)
Assignee: Daiichi Pharmaceutical Co., Ltd. (Tokyo, JP)
Application Number:06/876,623
Patent Claim Types:
see list of patent claims
Compound; Use;

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Foreign Priority and PCT Information for Patent: 5,053,407

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan60-134712Jun 20, 1985
Japan60-226499Oct 11, 1985
Japan61-16496Jan 28, 1986

International Patent Family for Patent: 5,053,407

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
CroatiaP950178► Subscribe
Denmark641688► Subscribe
CroatiaP950176► Subscribe
Hong Kong91793► Subscribe
Greece861625► Subscribe
Finland884331► Subscribe
Finland90241► Subscribe
Finland862643► Subscribe
Spain8801251► Subscribe
Spain556292► 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
Farmers Insurance
Federal Trade Commission
Argus Health
Harvard Business School
Cantor Fitzgerald

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