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:
Feb. 19, 2008
Filed:
Nov. 18, 2002
Applicants:
Bishwa Prakash Rai, Uttar Pradesh, IN;
Neera Tewari, Haryana, IN;
Yatendra Kumar, Haryana, IN;
Inventors:
Assignee:
Ranbaxy Laboratories Limited, Gurgaon, IN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 477/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a cost effective and industrially advantageous process for the preparation of imipenem of high purity, which comprises dissolving crude imipenerm in warm water to which some base has been added to obtain a solution, subjecting the resultant solution to activated carbon treatment, and adding an organic solvent to precipitate imipienem monohydrate as a crystalline product.