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:
Dec. 06, 2011
Filed:
Nov. 11, 2008
Chin-tsai Fan, Sinying, TW;
Chen-ming Hsiao, Sinying, TW;
Rong-bin Hsieh, Sinying, TW;
Syn-Tech Chem. & Pharm. Co., Ltd., Sinying, TW;
Abstract
The present invention provides a process for preparing the amorphous rabeprazole sodium. The process comprises the following steps: (a) Contacting rabeprazole sodium compound with a solvent system to thereby obtain a clear solution under a first temperature, wherein said solvent system is a mixture of at least two categories of organic solvents; (b) Stirring said clear solution of step (a) under a second temperature for a certain time period to obtain a solution containing resultant separated solid, wherein said second temperature is equal to or lower than said first temperature; (c) Filtering said solution containing resultant separated solid obtained from step (b) to obtain a wet solid; and (d) Drying said wet solid to obtain an amorphous rabeprazole sodium compound.