Title of Invention

BILAYER TABLETS OF OXCARBAZEPINE FOR CONTROLLED DELIVERY AND A PROCESS OF PREPARATION THEREOF

Abstract The present invention describes a bilayer tablet comprising (a) an immediate release first layer comprising an effective amount of oxcarbazepine and at least one pharmaceutically acceptable excient and (b) a cibtrikked release second layer comprising an effective amount of oxcarbazepine and phrmaceutically acceptable excipients wherein total of oxcarbazepine impurities is less than or equal to about 2% by weight. The present invention describes process for preparation of a controlled release bilayer tablets that is capable of delivering oxcarbazepine from matrix forming layer. The present invention also describes process for preparation of oxcarbazepine bilayer tablets. The present invention relates more particularly to bilayer tablets of oxcarbazepine, which maintain a therapetically effective blood concentration of oxcarbazepine with once a day administration.
Full Text

Documents:

1425-mum-2004-abstract(29-12-2004).doc

1425-mum-2004-abstract(29-12-2004).pdf

1425-mum-2004-abstract(granted)-(15-6-2009).doc

1425-mum-2004-abstract(granted)-(15-6-2009).pdf

1425-mum-2004-cancelled pages(3-9-2007).pdf

1425-mum-2004-cancelled pages(7-6-2009).pdf

1425-mum-2004-claims(29-12-2004).doc

1425-mum-2004-claims(29-12-2004).pdf

1425-mum-2004-claims(amended)-(3-9-2007).pdf

1425-mum-2004-claims(amended)-(7-6-2009).pdf

1425-mum-2004-claims(granted)-(15-6-2009).doc

1425-mum-2004-claims(granted)-(15-6-2009).pdf

1425-mum-2004-correspondence(21-8-2007).pdf

1425-mum-2004-correspondence(ipo)-(15-6-2009).pdf

1425-mum-2004-description(complete)(29-12-2004).pdf

1425-mum-2004-description(granted)-(15-6-2009).pdf

1425-mum-2004-drawing(29-12-2004).pdf

1425-mum-2004-drawing(granted)-(15-6-2009).pdf

1425-mum-2004-form 1(29-12-2004).pdf

1425-mum-2004-form 19(29-12-2004).pdf

1425-mum-2004-form 2(29-12-2004).doc

1425-mum-2004-form 2(29-12-2004).pdf

1425-mum-2004-form 2(granted)-(15-6-2009).doc

1425-mum-2004-form 2(granted)-(15-6-2009).pdf

1425-mum-2004-form 2(title page)-(29-12-2004).pdf

1425-mum-2004-form 2(title page)-(granted)-(15-6-2009).pdf

1425-mum-2004-form 3(29-12-2004).pdf


Patent Number 234792
Indian Patent Application Number 1425/MUM/2004
PG Journal Number 28/2009
Publication Date 10-Jul-2009
Grant Date 15-Jun-2009
Date of Filing 29-Dec-2004
Name of Patentee M/s.J.B.CHEMICALS & PHARMACEUTICALS LTD
Applicant Address Neelam Centre,'B' Wing, 4th Floor,Hind Cycle Road,Worli, Mumbai-400 030
Inventors:
# Inventor's Name Inventor's Address
1 Mr.MEHTA BHARAT PRAVINCHANDRA 5 Avillion,Little Gibbs Road, Malabar Hill,Mumbai-400 006
2 RAJEN SHAH 4/12 Kumar City, Kalyani Nagar Off Nagar Road, Pune 411014
3 JOSHI MILIND DATTATRAYA B-402 Prakriti Apts, K.K.Mill Compound, Mohan Sunderji Road, Reghunath Nagar,Thane(W)
PCT International Classification Number A61K 35/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA