In November 1949 the group officially changed its name to Internationale des Artistes Expérimentaux with membership having spread across Europe and the United States, although this name has never stuck. The movement was officially disbanded in 1951, but many of its members remained close, with Dotremont in particular continuing collaborations with many of the leading members of the group. The primary focus of the group consisted of semi-abstract paintings with brilliant color, violent brushwork, and distorted human figures inspired by primitive and folk art and similar to American action painting. Cobra was a milestone in the development of Tachisme and European abstract expressionism.