Prakash Viswanathan has been granted 30 US patents while listed as an inventor at Rovi Guides. The first was granted in 2002 and the most recent in November 2025. Prakash Viswanathan ranks #121,623 of 4,157,543 US inventors in our database (top 2.9%). Patent records list Prakash Viswanathan in Survanagiri, TN, IN.