Born in 1944 in Altensteig, Hartmut studied at the University of Design in Schwäbisch Gmünd, and founded Esslinger Design in Altensteig in 1969, renamed Frogdesign in 1982.
Frogdesign became one of the world’s most famous design agencies, with headquarters in Silicon Valley, and offices in USA, China, Germany and Italy.
Hartmut has designed products for companies such as Sony, Apple, Fissler, AEG, Logitech, Microsoft, IBM, Lufthansa, SAP, and Dell, all with a timeless, universal design philosophy.
Frogdesign created the ‘Snow White Design Language’ which was applied to all Apple product lines between 1984 to 1990. Frogdesign also worked on Lufthansa’s global design and brand strategy, SAP’s corporate identity and user interface, Microsoft Windows branding and user interface design, HP, Motorola and General Electric. In 2000, the company was renamed Frog Design, and finally named frog in 2011.
In 1990, Hartmut co-founded the Karlsruhe College of Design, and in 2006 he became the Professor for Industrial Design at the University of Applied Art in Vienna.
Hartmut published A Fine Line in 2009, exploring sustainable business solutions.