The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2011
Filed:
Mar. 15, 2005
Christine Allen, Toronto, CA;
Justin Grant, Toronto, CA;
Micheline Piquette-miller, Toronto, CA;
Other;
Abstract
Formulations or delivery systems are provided for controlled release of therapeutically active agents. The delivery systems are composed of polymer and lipid materials and may be prepared as a gel, paste, solution, film, implant or barrier depending on the intended application. The polymer component of the matrix is the naturally occurring biomaterial, chitosan, or a mixture of chitin and chitosan. The lipid component may include phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidyl or a mixture thereof. The delivery system may be used for delivery of hydrophilic agents, hydrophobic agents or combinations thereof. The therapeutically active agents may be formulated within the matrix as free agents or incorporated into particles. In a preferred embodiment the agents are incorporated into polymeric particles that are dispersed throughout the matrix.