Gastone Rinaldi was born in Padua, Italy in 1920. In 1916 his father Mario had established RIMA, a company for the production of metal furniture. Gastone enrolled in the Faculty of Economics, but he was passionate about design and sport. In 1948, with his brother Giorgio, they took over from his father in managing his business. He met Gio Ponti and in 1950 he designed the chairs for the Hospital Section of the IX Milan Triennial. In 1952, he attended the XXX Milano Fair in the section curated by Alberto Rosselli, Ettore Sottsass and Marco Zanuso. The armchairs for the Piccolo theatre of Milan followed, with Zanuso. In 1954, he won the Compasso d’Oro for the chair DU30. He participated with Ponti, Parisi, De Carli and Gardella in the American adventure of Altamira, one of the first companies across the ocean to call Italian designers. However the internal relations within RIMA became complex and in 1974 Rinaldi established Thema. Thema closed in 1989, Gastone Rinaldi died in Padua in 2006.