1. Process For Preparing rhamnolipid capped metal nanoparticles. Pennathur Gautam, Narayanan Janakiraman,:Centre fo Biotechnology, Anna University, Chennai - 600025,Tamilnadu India, Patent Application Publication, Application No.2143/CHE/2008 A India Date of filing of Application :02/09/2008 Publication Date : 21/11/2008. The PatentOffice Journal.
2. A Method to detect hydrolases and in-gel staining of proteins using tetra (4-sulphonato phenyl) porphyrin. P.Gautam , V.Sujatha ,K.S.Vinod Kumar D.Leelavathi. ApplicationNo.3161/CHE/2008 A. Date of filing of Application :16/12/2008 (43) Publication Date : 20/02/2009 The Patent Office Journal.
3. A Method for microbial production of extracellular lipase using vegetable oilseed substrates. Pennathur Gautam, Cherukuvada Subbalakshmi Latha ApplicationNo.375/CHE/2009 A.Date of filing of Application :20/02/2009 Publication Date : 06/03/2009. The Patent Office Journal.
4. A Process for production of water-based nanofluid using single walled carbon nanotubes. P. Gautam, K.A.Padmanabhan,T.Mohan Das,R. Jayavel,A.Pandurangan, T.Somanathan, N.Rajaram, V. Ganpath Kumar, S. Nagaraja. Application No.2831/CHE/2008 Date of filing of Application :18/11/2008 Publication Date : 30/01/2009. The Patent Office Journal.
5. A Method for producing metal oxide nanoparticles using tamarind seed polysaccharide. P. Gautam, B.S. Lakshmi, K.S.Vinod Kumar, V. Sujatha, Appl. No. 832/CHE/2009 A. Date of filing of Application: 09/04/09 Publication Date : 12/06/2009. The Patent Office Journal.
6. A Method for live cell imaging of bacterial cells using anionic porphyrins and its metallo derivatives. P. Gautam, V. Sujatha, K.S. Vinod Kumar, Srinath Krishnamurthy, Bharat Sridhar. Appl. No. 1082/CHE/2009 A. Date of filing of Application: 11/05/09 Publication Date: 12/06/2009. The Patent Office Journal.
7. A Process for Production and Purification of Thermostable Organic Solvent Protease from Aeromonas vernii PG01. P. Gautam, K. Diwakar & J. Deepa Priya Appl. No.491/CHE/2010 A. Date of filing of Application: 25/02/2010.