He has been a member of the Supervisory Board of Infineon Technologies AG since 2007 and has closely accompanied the development of the company for more than ten years. Sünner studied law at the Universities of Munich, Berlin (Freie Universit ät) and Marburg/Lahn and received his doctorate in law at the University of Regensburg in 1969. Dr. Eckart Sünner has been a member of the Supervisory Board of K+S AG since April 1992.