where did the brand name adidas come from
The brothers split up in 1947, with Rudi forming a new firm that he called Ruda -- from Rudolf Dassler, later rebranded Puma, and Adi forming a company formally registered as Adidas AG from Adi Dassler on 18 August 1949. Although it is a popular urban myth that the name is an acronym for All Day I Dream About Sports, that phrase is a "backronym"; in reality the name is actually a portmanteau formed from "Adi" (a nickname for Adolf) and "Das" (from "Dassler").