Patent ID: 7364675

Claim:
A method for fabricating polymer microparticles, comprising the steps of: (a) coating a polymer stamp with a polymeric solution to create a continuous layer of polymer on said stamp, wherein said stamp further comprises a plurality of microstructures on at least one side of said stamp for receiving said polymeric solution, and wherein said microstructures further comprise a plurality of micro-pillars and a plurality of micro-wells; (b) removing said layer of polymer from said micro-pillars; (c) creating polymer microparticles by transferring said layer of polymer from said micro-wells onto a substrate, wherein said substrate further comprises a layer of dissolvable material covering said substrate; (d) applying a thin layer of oil to said substrate to selectively cover said microparticles; and (e) placing said substrate in a solvent to dissolve said dissolvable material and release said microparticles into solution.