The Tatsunoko licensing issues is a mess. Right now I am doing research on "Battle of the Planets" (where Ken the Eagle is from). In February of 2007 Sandy Frank's license expire, and apparently ADV picked it up for the newer productions, so that's one company for Capcom to pursue. "Karas" was licensed by Manga Entertainment, that's two companies to give credit.
Yatterman just received a remake. The remake hasn't been licensed in any part of the world. The original was never licensed either. The Casshern OAV was originally distributed by Orion, then ADV picked it up for re-release. Tekkaman had I believe 3 distributors during its original run, Saban being one of them.
Hurricane Polymar has no US distributor. Neither do Gold Lightan, The Genie Family or Ippatsuman.
So to sum it up...Tatsunoko is one big licensing mess.