Prof. Dr. Raphael D. Thöne (2014 - 2021)

Frédéric Jenniges (1999 - 2013)

Detlef Tewes (1992 - 1998)

Hans Boll (1990 - 1992)

Fred Witt (1977 - 1989)

Friedhelm Winnemann (1967 - 1977)

Hans Ludwig (1954 - 1967)

Karl Abe (1934 - 1954)

Karl Brockmeier (1910 - 1934)

H. Stutzmann (1894 - 1910)