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. 24, 2010
Filed:
May. 25, 2005
Chava Satyanarayana, Secunderabad, IN;
Gorantla Seeta Ramanjaneyulu, Secunderabad, IN;
Indukuri Venkata Sunil Kumar, Hyderabad, IN;
Chava Satyanarayana, Secunderabad, IN;
Gorantla Seeta Ramanjaneyulu, Secunderabad, IN;
Indukuri Venkata Sunil Kumar, Hyderabad, IN;
Matrix Laboratories Ltd, , IN;
Abstract
The present invention relates to a process for purification of novel polymorphic form of Gatifloxacin which comprises dissolving Gatifloxacin in about 15-50 volumes of methanol, removing insolubles if any, adding organic base to the solution, maintaining the solution at temperature of 30° C. to 70° C., for about 20 min to 4 hrs, followed by gradual cooling and maintaining the reaction mass to −10 to 20° C. for about 1-4 hrs, isolation and drying at temperature of about 45° C. to 65° C.