The following are some bulldozer manufacturers and some of the dozers they manufacture: Founded in 1925, caterpillar is one of the oldest manufacturers of heavy machinery. Dozers manufactured by caterpillar go by the brand name Cat®. The Cat® brand is the cornerstone of the Caterpillar brand portfolio. Although Caterpillar was founded in 1925, ‘cat®’ was never used as a trademark until 1949.