When introduced in 1949, the Contax S was not marked as such, only "Contax", but increasing pressure from the new Zeiss Ikon company in Stuttgart induced Zeiss Ikon in Dresden to progressively abandon the use of the established trademark and names. The following model, known as "Contax D", first appeared with a little "D" marked under the Zeiss Ikon logo to signify its source as Dresden, but that was not good enough: in some markets it was sold as "Pentacon", a name contrived from "Pentaprism" and "Contax". The name "Pentax" had been thought of before but, as with Germany's capitulation in 1945 all German patents and trademarks were declared void, the Japanese seized it and registered it. Subsequent models were also made wearing both Contax and Pentacon nameplates, the former were meant for markets where Zeiss Ikon Dresden still held the rights to its name. Eventually, the company went on to form the Pentacon VEB conglomerate (which included companies as Meyer-Optik Görlitz, Ihagee Dresden, and KW, among others) that would start the long line of Praktica cameras, high quality but affordable, in accordance with the Communist ideal. In all, 22 Contax/Pentacon models were built in Dresden.