Buckminster Fuller and Isamu Noguchi on many major projects. He met Fuller while studying architecture at Cornell University, and Fuller introduced him to Noguchi. Sadao began working with Fuller in 1954, and in 1965 formed Fuller and Sadao, P.C., whose first project was the large geodesic dome for the U.S. Pavilion at EXPO 67 in Montreal. Sadao began working with Noguchi on garden and landscape projects in the 1960s, and in 1971 formed Noguchi Fountain and Plaza, Inc., which completed the sculptor's Philip A. Hart Plaza and Horace E. Dodge and Son Memorial Fountain in Detroit. In addition to collaborating with Noguchi on public sculpture and garden projects, Sadao worked closely with the artist on the production and distribution of Akari, and on the design, construction and installation of the Noguchi Museum in Long Island City, New York. He was Executive Director of the Isamu Noguchi Foundation, Inc. from 1991 to 2003.