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Last Updated: March 28, 2024

Details for Patent: 8,815,801


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Summary for Patent: 8,815,801
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:13/548,463
Patent Claim Types:
see list of patent claims
Composition; Compound;

Drugs Protected by US Patent 8,815,801

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: 8,815,801

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2001-199484Jun 29, 2001
Japan2001-340993Nov 6, 2001

International Family Members for US Patent 8,815,801

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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