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Last Updated: March 28, 2024

Details for Patent: 5,330,767


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Summary for Patent: 5,330,767
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:
see list of patent claims
Dosage form; Process;

Drugs Protected by US Patent 5,330,767

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: 5,330,767

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

International Family Members for US Patent 5,330,767

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 61935 ⤷  Try a Trial
Canada 1260395 ⤷  Try a Trial
Germany 3678308 ⤷  Try a Trial
European Patent Office 0190833 ⤷  Try a Trial
Spain 551696 ⤷  Try a Trial
Spain 8703739 ⤷  Try a Trial
Greece 860332 ⤷  Try a Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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