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Last Updated: September 27, 2021

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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 ⤷  Try it Free
Australia 1850602 ⤷  Try it Free
Canada 2436825 ⤷  Try it Free
China 1254473 ⤷  Try it Free
China 1478086 ⤷  Try it Free
Cyprus 1112347 ⤷  Try it Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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