The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2007
Filed:
Oct. 17, 2003
Nam-du Kim, Osan-si, KR;
Jae-heon Lee, Yongin-si, KR;
Moon-sub Lee, Daejeon, KR;
Young-kil Chang, Seoul, KR;
Gwan-sun Lee, Seoul, KR;
Nam-Du Kim, Osan-si, KR;
Jae-Heon Lee, Yongin-si, KR;
Moon-Sub Lee, Daejeon, KR;
Young-Kil Chang, Seoul, KR;
Gwan-Sun Lee, Seoul, KR;
Hanmi Pharm Co., Ltd., Kyungki-do, KR;
Abstract
Risperidone is prepared in a high yield by reacting 2,4-difluorophenyl(4-piperidinyl)methanone oxime hydrochloride and 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one in an aqueous alkali hydroxide solution having an alkali hydroxide concentration in the range of 20 to 40%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile