1) R. Katz and M. Tomoaia-Cotisel,

"Site-specific biomolecular complexes",

World Intellectual Property Organization (WIPO), WO 96/04001, 1996.

2) R. Katz and M. Tomoaia-Cotisel,

"Method for delivering active agents to mammalian brains in a complex with

eicosapentaenoic acid or docosahexaenoic acid-conjugated polycationic carrier",

United States Patent Number 5,716,614, Feb. 10, 1998.

3) R. Katz and M. Tomoaia-Cotisel,

"Carrier compositions for anti-neoplastic drugs",

United States Patent Number 5,925,669, Jul. 20, 1999.

4) R. Katz and M. Tomoaia-Cotisel,

"Lipophilic-polycationic delivery systems",

United States Patent Number 6,005,004, Dec. 21, 1999.

5) Gh. Tomoaia, M. Tomoaia-Cotisel, L. B. Pop, A. Mocanu and A. Pop,
“Nanopowders of hydroxyapatite and its substituted derivatives with medical

applications and their fabrication procedure”,
Romanian Patent Number 125817, June 28, 2013.