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Serving hundreds of leading biopharmaceutical companies globally:

Cantor Fitzgerald
Medtronic
Dow
Cipla
Express Scripts
Teva
Merck
McKinsey
QuintilesIMS

Generated: April 20, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,917,893

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Summary for Patent: 4,917,893
Title: Prolonged release microcapsules
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:07/103,117
Patent Claim Types:
see list of patent claims
Compound; Dosage form;

Drugs Protected by US Patent 4,917,893

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 4,917,893

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

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Serving hundreds of leading biopharmaceutical companies globally:

Fuji
Daiichi Sankyo
Accenture
Boehringer Ingelheim
Baxter
Johnson and Johnson
Colorcon
QuintilesIMS
McKesson

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