Ultem published comics for only five months after which all four of its titles are sold to Centaur Publications, Inc. A few months after that, Ultem reorganizes as Lex Publications which does not produce comics. Temerson would go on to start a number of comic book publishing companies, one of which (Brookwood) was edited by Maurice Rosenfield, son of J. A. Rosenfield, who was Ullman's brother-in-law.
Ultem has historically often been lumped in with Centaur (along with the Comics Magazine Company and early Chesler), but the companies have distinct editorial personalities, especially once Centaur starts building up its staff.
Related publishers:
Centaur: http://www.comics.org/publisher/58/
Comics Magazine Company: http://www.comics.org/publisher/7628/
Chesler: http://www.comics.org/publisher/112/
Temerson / Helnit / Continental: http://www.comics.org/publisher/129/
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