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. 17, 2010
Filed:
Mar. 30, 2004
Applicants:
Milind Moreshwar Gharpure, Pune, IN;
Swapnil Panditrao Sonawane, Pune, IN;
Srihari Shivaji Mane, Pune, IN;
Rajendra Dagesing Mahale, Pune, IN;
Inventors:
Milind Moreshwar Gharpure, Pune, IN;
Swapnil Panditrao Sonawane, Pune, IN;
Srihari Shivaji Mane, Pune, IN;
Rajendra Dagesing Mahale, Pune, IN;
Assignee:
Lupin Ltd., Mumbai, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 311/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparation of 4-hydroxy-pyran-2-one derivative of formula (I), wherein R is, and wherein Rand Rare methyl and Ris hydrogen or methyl, wherein R is as defined before, and Ris hydrogen, NHor an alkali metal,