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Generated: August 19, 2017

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Title: Sustained release microcapsule
Abstract:Microcapsules are advantageously produced with high take-up of a water-soluble drug by preparing a W/O emulsion composed of a water-soluble drug-containing solution as the inner aqueous phase and a polymer-containing solution as the oil phase, dispersing said emulsion in an aqueous phase and subjecting the resulting W/O/W emulsion to an in-water drying, wherein the viscosity of the W/O emulsion used in preparing the W/O/W emulsion is adjusted to about 150 to about 10,000 centipoises.
Inventor(s): Yamamoto; Masaki (Osaka, JP), Takada; Shigeyuki (Osaka, JP), Ogawa; Yasuaki (Osaka, JP)
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)
Application Number:07/936,726
Patent Claim Types:
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Dosage form; Process;

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Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan60-22978Feb 07, 1985
Japan60-267977Nov 27, 1985

International Patent Family for Patent: ► Subscribe

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Hungary196702► Subscribe
European Patent Office0190833► Subscribe
Spain551696► Subscribe
Spain8703739► Subscribe
Greece860332► 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 500+ biopharmaceutical companies globally:

Baxter
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Fuji
Julphar
Deloitte
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Covington
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