I found Dr. Prasada Rao had always a smiling face even when we were discussing some serious research projects. He always gave his sincere advice on the same. I regret that I left IPCL too early but even after that for a long time he helped me. He sent an expert scientist from IIP Dehra Dun to IIM Ahmedabad to observe my patented technology for conversion of waste to fuel oil. A few months back, I had a telephonic talk with him but it was a great shock for me to about the sad news of his demise.