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Last Updated: September 26, 2022

Details for Patent: 7,285,668

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Summary for Patent: 7,285,668
Title:Process for the crystallization of (R)- or (S)-lansoprazole
Abstract:The present invention relates to a production method of a crystal of (R)-lansoprazole or (S)-lansoprazole, which includes crystallization at a temperature of about 0.degree. C. to about 35.degree. C. from a C.sub.1-4 alkyl acetate solution containing (R)-lansoprazole or (S)-lansoprazole at a concentration of about 0.1 g/mL to about 0.5 g/mL and the like. According to the production method of the present invention, a crystal of (R)-lansoprazole or (S)-lansoprazole superior in preservation stability can be produced efficiently on an industrial large scale.
Inventor(s): Hashimoto; Hideo (Kobe, JP), Urai; Tadashi (Kawanishi, JP)
Assignee: Takeda Pharmaceutical Company Limited (Osaka, JP)
Application Number:10/432,798
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 7,285,668
Patent Claim Types:
see list of patent claims
Use; Formulation;

Drugs Protected by US Patent 7,285,668

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: 7,285,668

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2000-367757Dec 01, 2000
PCT Information
PCT FiledNovember 30, 2001PCT Application Number:PCT/JP01/10462
PCT Publication Date:June 06, 2002PCT Publication Number: WO02/44167

International Family Members for US Patent 7,285,668

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 511508 See Plans and Pricing
Australia 1850602 See Plans and Pricing
Canada 2436825 See Plans and Pricing
China 1254473 See Plans and Pricing
China 1478086 See Plans and Pricing
Cyprus 1112347 See Plans and Pricing
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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