Patent ID: 7387790

Claim:
Non-gas containing nanoparticles capable of being internalized within a target tissue or cell sufficient to achieve a desired effect comprising: a mixture of select lipids comprising: a) at least one first member selected from the group consisting of glycerol monoesters of saturated carboxylic acids containing from about 10 to 18 carbon atoms and aliphatic alcohols containing from about 10 to 18 carbon atoms; b) at least one second member selected from the group consisting of sterol aromatic acid esters; and c) at least one third member selected from the group consisting of sterols, and sterol esters of aliphatic carboxylic acids containing from about 1 to 18 carbon atoms; d) at least one fourth member selected from the group consisting of glycerol and glycerol di- and tri-esters of aliphatic carboxylic acids containing from about 10 to 18 carbon atoms, where said mixture of selected lipids is processed through a microfluidizer.