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Last Updated: March 28, 2024

Details for Patent: 5,480,656


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Summary for Patent: 5,480,656
Title: Prolonged release microcapsules
Abstract:This invention provides a microcapsule designed for zero order release of a physiologically active polypeptide over a period of at least two months, which is produced by preparing a water-in-oil emulsion comprising an inner aqueous layer containing about 20 to 70% (w/w) of said polypeptide and an oil layer containing a copolymer or homopolymer having a weight-average molecular weight of 7,000 to 30,000, wherein the composition ratio of lactic acid/glycolic acid in the copolymer or homopolymer is 80/10 to 100/0, and then subjecting said water-in oil emulsion to microencapsulation.
Inventor(s): Okada; Hiroaki (Suita, JP), Inoue; Yayoi (Kyoto, JP), Ogawa; Yasuaki (Otokuni, JP)
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)
Application Number:08/188,918
Patent Claim Types:
see list of patent claims
Compound; Dosage form;

Drugs Protected by US Patent 5,480,656

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

Foreign Priority and PCT Information for Patent: 5,480,656

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2-033133Feb 13, 1990

International Family Members for US Patent 5,480,656

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 123413 ⤷  Try a Trial
Australia 645108 ⤷  Try a Trial
Australia 8179491 ⤷  Try a Trial
Brazil 9103553 ⤷  Try a Trial
Canada 2036089 ⤷  Try a Trial
Canada 2316159 ⤷  Try a Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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