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:
Aug. 21, 2012
Filed:
Jun. 19, 2008
Applicants:
OM Dutt Tyagi, Hyderabad, IN;
Purna Chandra Ray, Hyderabad, IN;
Madhuresh Kumar Sethi, Hyderabad, IN;
Bhausaheb Chavhan, Hyderabad, IN;
Inventors:
Om Dutt Tyagi, Hyderabad, IN;
Purna Chandra Ray, Hyderabad, IN;
Madhuresh Kumar Sethi, Hyderabad, IN;
Bhausaheb Chavhan, Hyderabad, IN;
Assignee:
Matrix Laboratories Ltd, , IN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for the preparation of pure Rabeprazole sulfoxide using the solvent mixture for the extraction steps and this invention further relates to the process for the preparation of amorphous Rabeprazole sodium using pure rabeprazole base in presence of aqueous NaOH and water miscible solvent and adding an anti-solvent.