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Details for Patent: 5,006,528

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Summary for Patent: 5,006,528

Title: Carbostyril derivatives
Abstract:A novel carbostyril derivative and salt thereof represented by the formula (1) ##STR1## (wherein R is a group of the formula ##STR2## ((wherein R.sup.1 is a C.sub.1- C.sub.3 alkoxy group)), a group of the formula ##STR3## ((wherein R.sup.2 and R .sup.3 are each, at the same time, a chlorine atom, a bromine atom; and R.sup.4 is a hydrogen atom or a chlorine atom)), 2-methyl-3-nitrophenyl group, 3,5-dichlorophenyl group, or a group of the formula ##STR4## ((wherein R.sup.5 is a chlorine atom or a bromine atom; and R.sup.6 is a methyl group)); the carbon-carbon bond between 3- and 4-position in the carbostyril skeleton is a single or double bond).
Inventor(s): Oshiro; Yasuo (Tokushima, JP), Sato; Seiji (Itano, JP), Kurahashi; Nobuyuki (Tokushima, JP)
Assignee: Otsuka Pharmaceutical Co., Ltd. (Tokyo, JP)
Application Number:07/424,719
Patent Claim Types:
see list of patent claims
Compound; Use; Composition;

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Foreign Priority and PCT Information for Patent: 5,006,528

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan63-276953Oct 31, 1988

International Patent Family for Patent: 5,006,528

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Brazil1100204► subscribe
China1028104► subscribe
China1042537► 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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