Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.3053/MUM/2010 A
(19) INDIA
(22) Date of filing of Application :03/11/2010 (43) Publication Date : 21/06/2013
(54) Title of the invention : PHARMACEUTICAL COMPOSITIONS FOR COLLOIDAL DRUG DELIVERY
(51) International classification
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
:A61K47/10;
A61K9/107;
(71)Name of Applicant :
1)DR.(MRS) PADMA VENKITACHALAM
DEVARAJAN
Address of Applicant :DEPARTMENT OF
PARMACEUTICALS SCIENCES AND TECHNOLOGY,
INSTITUTE OF CHEMICAL TECHNOLOGY, MATUNGA,
MUMBAI-19 INDIA Maharashtra India
(72)Name of Inventor :
1)DR. (MRS) PADMA VENKITACHALAM
DEVARAJAN
2)SONALI V. KAPSE
3)ANIL B JINDAL
(57) Abstract :
The present invention relates to preparation of drug loaded heterogeneous nanosystems resulting from mixing of two monophasic
phases, the non-aqueous phase comprising of active agent/s, polymers, lipids, surfactants, solubilizer/s and other excipients and
the aqueous phase comprising of buffers, isotonic solutions, sweetners, flavors and other excipients .The novel technique enables
formation of stable colloidal particles with high drug loading and predictable size at the time of use. The invention represents a
major step in circumventing the technological challenges in the design of colloidal particles which can remain suspended for at
least 4h maintaining an effective average particle size of