On returning home after WWII, Philipp Kreis opens a language school in Munich. The lack of mains power in the post-war period poses a major problem for evening courses, giving him the idea of going into gas light production. Due to the increasing demand for gas lights, Philipp finds himself producing and selling them in large quantities in a very short space of time.
On 27 October 1949, he registered his trade under the company name Truma. The brand name Truma stands for the name of the then US president Harry S. Truman, who the company’s founder Philipp Kreis very much admired due to the instrumental role he played in restoring Germany to an industrial nation.