1924
Born in Aachen
1946-50
Studies at the Staatliche Kunstakademie (Academy of Arts) Düsseldorf
since 1953
Member of “Gruppe 53″
1957-60
Chairman of the “Gruppe 53″ in Düsseldorf
1960
First newspaper-collages
1961
Award of the federal state Nordrhein-Westfalen
1964
First „advertising columns“, stay in New York for one month
1967-90
Professorship at the Hochschule der Künste (Academy of Arts) Berlin; lives in Berlin and Düsseldorf
1969
Use of negative film in collages
1971
Acrylic paintings as painted collages
1977
Return to the pure technique of collage
1982-85
2. chairman of the Deutscher Künstlerbund
1984
Beginning of closed paintings with the help of cardboard material
1990
End of professorship
2011
Died in Düsseldorf