1. Annamalai Senthil Kumar*, KhairunnisaAmreen, Patenting of human whole blood as a redox active thin film electrode, Indian patent filed , 2014. No. 4600/CHE/2014, filed on 22/09/2014. 

2. Annamalai Senthil Kumar*, Nandimalla Vishnu, Unusual neutral pH assisted electrochemical polymerization of aniline to highly redox active and electro catalytic polyaniline,  Indian patent filed , 2014. No.75/CHE/2014 filed on 08/01/2014.

3. Annamalai Senthil Kumar*, Puchakayala Swetha, Selective electrochemical recognition of a -naphthol isomer and in-situ immobilization of naphthoquinones on a multiwalled carbon nanotube modified electrode for tunableelectrocatalysis,  Indian patent filed , 2013. No.1100/CHE/2013 filed on 14/03/2013.

4. Annamalai Senthil Kumar * , Palani Barathi, Facile electrochemical oxidation of polyaromatic  hydrocarbons to surface confined redox active quinone species on multiwalled carbon nanotube surface, Indian patent filed,  2013. No.515/CHE/2013 filed on 07/02/2013.

5.  Annamalai Senthil Kumar*, Puchakayala Swetha, A membrane film catalyst for  simultaneous electrochemical detection of Hypoxanthine, Xanthine and Uric acid, Indian patent filed , 2010. No.204/CHE/2010 filed on 27/01/2010.