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Last Updated: November 30, 2023

Details for Patent: 7,429,559

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Summary for Patent: 7,429,559
Title:Controlled release composition and method of producing the same
Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
Inventor(s): Yamamoto; Kazumichi (Kyoto, JP), Yamada; Akiko (Kyoto, JP), Hata; Yoshio (Hokkaido, JP)
Assignee: Takeda Pharmaceutical Company Limited (Osaka, JP)
Application Number:10/182,731
Patent Claim Types:
see list of patent claims

Drugs Protected by US Patent 7,429,559

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: 7,429,559

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2001-199484Jun 29, 2001
Japan2001-340993Nov 06, 2001
PCT Information
PCT FiledJune 28, 2002PCT Application Number:PCT/JP02/06527
PCT Publication Date:January 09, 2003PCT Publication Number: WO03/002092

International Family Members for US Patent 7,429,559

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 034641 ⤷  Try a Trial
Argentina 098261 ⤷  Try a Trial
Austria 326264 ⤷  Try a Trial
Austria 387937 ⤷  Try a Trial
Austria 509668 ⤷  Try a Trial
Australia 2002311631 ⤷  Try a Trial
Australia 2006246508 ⤷  Try a Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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