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2. Leuschner, Carola; Lvov, Yuri M.; Kumar, Challa S. S. R.. Layered nanoparticles for self-aggregation prevention and sustained release of small molecule drugs such as ligand-lytic peptide conjugates for cancer targeting. PCT Int. Appl. (2007), 47pp. CODEN: PIXXD2 WO 2007115033
3. Leuschner, Carola; Kumar, Challa S. S. R.; Hansel, William; Hormes, Josef.   In vivo imaging and therapy with magnetic nanoparticle conjugates.    PCT Int. Appl.  (2007),     79pp.  WO  2007021621.
4. Kumar, Challa; Podlaha, Elizabeth J.; Guo, Zhanhu; Hormes, Josef.   Core-shell nanostructures and microstructures.    U.S. Pat. Appl. Publ.  (2006),     24pp.  US  2006177660.
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