Master of Science, University Basle, Switzerland, 1961. Doctor of Philosophy, University Basle, 1964. Habilitation, University Konstanz, Germany, 1970.
Postdoctoral fellow, Medical Nobel Institute, Stockholm, 1965-1966; research associate, University of Michigan, Ann Arbor, 1967-1968; instructor, University of Michigan, Ann Arbor, 1969-1970; associate professor, Agricultural U., Wageningen, the Netherlands, 1971-1976; professor, Agricultural U., Wageningen, the Netherlands, 1977-1987; director toxicology, Sandoz Agro Ltd., Basel, Switzerland, since 1988. Department chairman Agricultural U., Wageningen, 1981-1982, chairman biotechnology, 1979-1982, chairman science committee, 1977-1978. Adjunct Professor U. Georgia, Athens, since 1981.
Sergeant major Infantry Swiss military, 1954-1964. Member Swiss Association for Chemist, Swiss Chemical Society, New York Academy Science M C.
Married Rita Katharina Felder, September 3, 1960. Children: Sandra Maria, Kirsten Elisabeth.