Research and Development Boehringer, Germany, 1982-1992, quality assurance manager, 1993-1995. Production manager Boehninger Ingelheim, since 1995. Chairman Arbeitsausschuss M2 im Deutsches Institut für Normung, since 1995.
Member working group 2 International Organization for Standardization TC 194, since 1989, head of German delegation, since 1995. Speaker several workshops on biomaterials.