Patent Number: 7,611,690

Title: Nanoparticles for protein drug delivery

Abstract: The invention discloses the nanoparticles composed of chitosan, poly-glutamic acid, and at least one protein drug or bioactive agent characterized with a positive surface charge and their enhanced permeability for paracellular protein drug and bioactive agent delivery.

Inventors: Sung; Hsing-Wen (Hsinchu, TW), Lin; Yu-Hsin (Kaohsiung, TW), Tu; Hosheng (Newport Beach, CA)

Assignee: GP Medical, Inc.

International Classification: A61K 51/00 (20060101)

Expiration Date: 1/03/02017