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Novel In Situ Forming Controlled Release Microcarrier Delivery System

Abstract: A ready-to use, stable, gelled polymer droplet-in-oil dispersion is described which helps in in-situ formation of a multitude of small solid, semisolid, or gelled microcarriers. The dispersion is placed into a body in a semisolid form and cures to form the delivery system in-situ. The process for making such a dispersion comprises the steps of (i) dissolving a polymer in a biocompatible solvent at an elevated temperature to form a polymer solution, (ii) preparing a second oil phase solution of a biocompatible emulsifier at an elevated temperature, (iii) mixing the polymer solution with the oil phase solution at an elevated temperature and subsequently cooling to refrigeration temperature. Placing the gelled dispersion within a body produces the microcarrier delivery system in-situ. The composition of a syringeable, biodegradable dispersion incorporating an effective level of a biologically active agent before injection into a body provides a novel controlled delivery system of drugs for healthcare applications.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
12 May 2003
Publication Number
11/2007
Publication Type
INA
Invention Field
PHARMACEUTICALS
Status
Email
Parent Application

Applicants

WOCKHARDT LIMITED
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051

Inventors

1. HARSHAL PRABHAKAR BHAGWATWAR
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
2. VARADA RAMESH BAPAT
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
3. MAHESH BALKRISHNA PAITHANKAR
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
4. ARUN SHRINIWAS GOSAVI
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
5. BHUSHAN SUBHASH YEOLA
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
6. MANOJ ANIL BAGOOL
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
7. NITIN SHETTY
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
8. MILIND CHINTAMAN SHUKLA
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051
9. NOEL JOHN DE SOUZA
WOCKHARDT LIMITED WOCKHARDT TOWERS, BANDRA-KURLA COMPLEX BANDRA (E), MUMBAI 400 051

Specification

Documents

Application Documents

# Name Date
1 505-mumnp-2003-claims(12-5-2003).pdf 2018-08-08
1 505-mumnp-2003-correspondence(ipo)-(17-11-2009).pdf 2009-11-17
2 505-mumnp-2003-wo international publication report(12-5-2003).pdf 2018-08-08
2 505-mumnp-2003-correspondence(23-4-2004).pdf 2018-08-08
3 505-mumnp-2003-petition under rule 137(23-4-2004).pdf 2018-08-08
3 505-mumnp-2003-description(complete)-(12-5-2003).pdf 2018-08-08
4 505-mumnp-2003-form 3(9-5-2003).pdf 2018-08-08
4 505-mumnp-2003-drawing(12-5-2003).pdf 2018-08-08
5 505-mumnp-2003-form 18(31-5-2006).pdf 2018-08-08
5 505-mumnp-2003-form 2(title page)-(12-5-2003).pdf 2018-08-08
6 505-mumnp-2003-form 19(25-7-2003).pdf 2018-08-08
6 505-mumnp-2003-form 2(12-5-2003).pdf 2018-08-08
7 505-mumnp-2003-form 19(25-7-2003).pdf 2018-08-08
7 505-mumnp-2003-form 2(12-5-2003).pdf 2018-08-08
8 505-mumnp-2003-form 18(31-5-2006).pdf 2018-08-08
8 505-mumnp-2003-form 2(title page)-(12-5-2003).pdf 2018-08-08
9 505-mumnp-2003-drawing(12-5-2003).pdf 2018-08-08
9 505-mumnp-2003-form 3(9-5-2003).pdf 2018-08-08
10 505-mumnp-2003-petition under rule 137(23-4-2004).pdf 2018-08-08
10 505-mumnp-2003-description(complete)-(12-5-2003).pdf 2018-08-08
11 505-mumnp-2003-wo international publication report(12-5-2003).pdf 2018-08-08
11 505-mumnp-2003-correspondence(23-4-2004).pdf 2018-08-08
12 505-mumnp-2003-correspondence(ipo)-(17-11-2009).pdf 2009-11-17
12 505-mumnp-2003-claims(12-5-2003).pdf 2018-08-08