Dr. R. B. Mitra , Ph.D. in Organic Synthesis & Chemical Technology became the Director of CLRI in 1988. His main contributions were in the fields of Organic Synthesis, Process Development and Organic Chemical Technology, Agrochemicals, Intermediates for Pesticides, Drugs and other Organic Fine Chemicals.

He has widely traveled and worked abroad in U.S.A., U.K. and Japan.
His publications and patents include 70 Research Papers, 6 Technical Reports, 2 Scientific Books, 5 patents filed and developed 15 Processes.
He had many awards to his credit including Dr.K.G. Naik Gold Medal by M.S.University, Baroda and N.R.D.C. award for the best process developed for insecticide ‘ETHION’ in 1985.