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:
Jul. 10, 2007
Filed:
May. 20, 2002
Applicants:
Yatendra Kumar, Haryana, IN;
Neera Tewari, Haryana, IN;
Ram Chander Aryan, Delhi, IN;
Bishwa Prakash Rai, Uttar Pradesh, IN;
Inventors:
Yatendra Kumar, Haryana, IN;
Neera Tewari, Haryana, IN;
Ram Chander Aryan, Delhi, IN;
Bishwa Prakash Rai, Uttar Pradesh, IN;
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 comprising the steps of treating an aqueous solution containing imipenem with an organic solvent, wherein the imipenem is not lyophilized; and isolating the pure crystalline imipenem monohydrate from the reaction mixture thereof.