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:
Jan. 26, 2021
Filed:
May. 24, 2019
Cadila Healthcare Limited, Gujarat, IN;
Ranjit C. Desai, Gujarat, IN;
Rajiv Sharma, Gujarat, IN;
Vrajesh Pandya, Gujarat, IN;
Kalpesh Shah, Gujarat, IN;
Sunil Patel, Gujarat, IN;
Rakesh Chauhan, Gujarat, IN;
Ranjeet Nair, Gujarat, IN;
Vivek Joshi, Gujarat, IN;
Manoj Patel, Gujarat, IN;
Mrigendra Shukla, Gujarat, IN;
CADILA HEALTHCARE LIMITED, Gujarat, IN;
Abstract
The present invention relates to an improved process for the preparation of quinolone based compounds of general formula (I) using intermediate compound of general formula (XII). Invention also provides an improved process for the preparation of compound of formula (I-a) using intermediate compound of formula (XII-a) and some novel impurities generated during process. Compounds prepared using this process can be used to treat anemia.