The other three donors, including SAP co-founder Dietmar Hopp, had fallen out of the ranks due to their generosity.

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For these reasons, SAP co-founder Hasso Plattner does not appear alongside his former partners, Dietmar Hopp and Klaus Tschira.

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Likewise, SAP founder Dietmar Hopp uses his vast wealth to fund an array of companies that pursue cutting-edge research in experimental medicine.

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Golfs on partner Dietmar Hopp's course in Walldorf, Germany. 5.

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