Controlled release nanoparticulate compositions
First Claim
Patent Images
1. A controlled release nanoparticulate clozapine composition comprising(a) clozapine particles having an effective average particle size of less than about 1000 nm;
- (b) at least one surface stabilizer adsorbed on the surface of the clozapine particles, and(c) at least one pharmaceutically acceptable rate-controlling polymer, wherein the clozapine composition provides controlled release of the clozapine for a time period ranging from about 2 to about 24 hours or longer.
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Abstract
Described are controlled release nanoparticulate formulations comprising a nanoparticulate agent to be administered and a rate-controlling polymer which functions to prolong the release of the agent following administration. The novel compositions release the agent following administration for a time period ranging from about 2 to about 24 hours or longer.
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Citations
50 Claims
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1. A controlled release nanoparticulate clozapine composition comprising
(a) clozapine particles having an effective average particle size of less than about 1000 nm; -
(b) at least one surface stabilizer adsorbed on the surface of the clozapine particles, and (c) at least one pharmaceutically acceptable rate-controlling polymer, wherein the clozapine composition provides controlled release of the clozapine for a time period ranging from about 2 to about 24 hours or longer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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21-35. -35. (canceled)
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45. A method of preparing a solid dose controlled release clozapine nanoparticulate formulation comprising:
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(a) combining a nanoparticulate clozapine composition having an effective average particle size of less than about 1000 nm and at least one surface stabilizer adsorbed on the surface of the nanoparticulate clozapine with at least one suitable rate-controlling polymer; and (b) forming a solid dose of the combination of step (a), wherein the solid dose releases the nanoparticulate clozapine following oral administration to a patient for a time period ranging from about 2 to about 24 hours or longer. - View Dependent Claims (46, 47, 48, 49)
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50. A method of treating a mammal comprising:
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(a) administering to the mammal an effective amount of a solid dose controlled release nanoparticulate clozapine composition comprising particles of clozapine having an effective average particle size of less than about 1000 nm and at least one surface stabilizer adsorbed on the surface of the clozapine particles; and (b) releasing the clozapine particles to the mammal following administration for a time period ranging from about 2 to about 24 hours or longer.
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Specification