Title of Invention

AN IMPROVED PROCESS FOR PREPARATION OF DIHYDROCHLORIDE OF LEVO-CETIRIZINE

Abstract The present invention discloses an improved process for preparation dihydro chloride of levo-[2-[4-[4-chlorophenyl)-phenyl methyl]ethoxy] acetic acid which is generally known as levocetirizine dihydrochloride. More particularly, this invention discloses the resolution of 1-[(4-chlorophenyl)phenyl methyl] piperazine or 4-chloro benzhydryl piperazine by using Di-benzoyl-D-tartaric acid as a resolving agent in an early step of the process.
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Documents:

501-mum-2004-abstract(30-4-2004).pdf

501-mum-2004-abstract(granted)-(13-1-2011).pdf

501-mum-2004-cancelled pages(9-7-2009).pdf

501-mum-2004-claims(30-4-2004).pdf

501-mum-2004-claims(granted)-(13-1-2011).pdf

501-MUM-2004-CORRESPONDENCE(2-2-2009).pdf

501-mum-2004-correspondence(29-1-2007).pdf

501-mum-2004-correspondence(4-5-2004).pdf

501-mum-2004-correspondence(ipo)-(14-1-2011).pdf

501-mum-2004-correspondence(ipo)-(18-2-2009).pdf

501-mum-2004-correspondence(ipo)-(26-5-2009).pdf

501-mum-2004-description(complete)-(30-4-2004).pdf

501-mum-2004-description(granted)-(13-1-2011).pdf

501-mum-2004-first examination report(26-5-2009).pdf

501-mum-2004-form 1(30-4-2004).pdf

501-mum-2004-form 1(5-5-2004).pdf

501-mum-2004-form 18(29-1-2007).pdf

501-mum-2004-form 2(30-4-2004).pdf

501-mum-2004-form 2(granted)-(13-1-2011).pdf

501-mum-2004-form 2(title page)-(30-4-2004).pdf

501-mum-2004-form 2(title page)-(granted)-(13-1-2011).pdf

501-mum-2004-form 26(30-4-2004).pdf

501-mum-2004-form 3(30-4-2004).pdf

501-mum-2004-form 3(9-7-2009).pdf

501-mum-2004-reply to first examination report(9-7-2009).pdf

501-mum-2004-specification(amended)-(9-7-2009).pdf


Patent Number 245334
Indian Patent Application Number 501/MUM/2004
PG Journal Number 03/2011
Publication Date 21-Jan-2011
Grant Date 13-Jan-2011
Date of Filing 30-Apr-2004
Name of Patentee M/S. AARTI DRUGS LIMITED
Applicant Address 74,MATRU SMRUTI, 2nd FLOOR, ROAD NO.4, SCHEME NO.6, SION(EAST), MUMBAI
Inventors:
# Inventor's Name Inventor's Address
1 MULIK VIDYANAND YASHWANT 74,MATRU SMRUTI, 2nd FLOOR, ROAD NO.4, SCHEME NO.6, SION(EAST), MUMBAI-400022
2 LOKHANDE VILAS RAMKRISHNA 74,MATRU SMRUTI, 2nd FLOOR, ROAD NO.4, SCHEME NO.6, SION(EAST), MUMBAI-400022
3 TRIVEDI SHYAM VINODRAY 74,MATRU SMRUTI, 2nd FLOOR, ROAD NO.4, SCHEME NO.6, SION(EAST), MUMBAI-400022
4 PATIL PRAKASH MORESHWAR 74,MATRU SMRUTI, 2nd FLOOR, ROAD NO.4, SCHEME NO.6, SION(EAST), MUMBAI-400022
PCT International Classification Number A61K31/495
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA