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Patent: 5,631,020

Summary for Patent: 5,631,020

Title: Method for producing microcapsule
Abstract:A microcapsule produced by preparing a water-in-oil emulsion comprising an inner aqueous layer containing said water-soluble drug and a drug retaining substance therefor and an oil layer containing a polymer substance, then thickening or solidifying said inner aqueous layer to a viscosity of not lower than about 5000 centiposes and finally subjecting the resulting emulsion to in water drying gives prolonged release of water-soluble drug.
Inventor(s): Okada; Hiroaki (Osaka, JP), Ogawa; Yasuaki (Osaka, JP), Yashiki; Takatsuka (Hyogo, JP)
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)
Application Number:08/468,657
Patent Claim Types:
see list of patent claims
Use; Composition; Dosage form;
Patent PDF download available with subscription

Glossary
Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Abbvie Endocrine Inc
LUPRON DEPOT
leuprolide acetate
INJECTABLE;INJECTION019732Jan 26, 1989RXYes5,631,020<disabled>
Abbvie Endocrine Inc
LUPRON DEPOT
leuprolide acetate
INJECTABLE;INJECTION020708Mar 7, 1997RXYes5,631,020<disabled>
Abbvie Endocrine Inc
LUPRON DEPOT
leuprolide acetate
INJECTABLE;INJECTION020517Dec 22, 1995RXYes5,631,020<disabled>
Abbvie Endocrine Inc
LUPRON DEPOT
leuprolide acetate
INJECTABLE;INJECTION020517May 30, 1997RXYes5,631,020<disabled>
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Foreign Priority and PCT Information for Patent: 5,631,020

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan58-207760Nov 04, 1983

International Patent Family for Patent: 5,631,020

Country Document Number Publication Date
Austria42197May 15, 1989
Bulgaria60493May 31, 1995
Canada1233414Mar 01, 1988
Germany3477732May 24, 1989
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