Sure Atari is still around.
It was split into two seperate companies in 1984: Atari Games (
http://www.atarigames.com ) makes the coin-op games and Atari Corp. (
http://www.atari.com ) makes the home stuff. Atari Corp. recently merged
with JTS. As for who "owns" JTS, It is traded on the AMEX with 60% of
its shares on the market, so no one has a majority.