Sesann two seater sofa by Gianfranco Frattini in dark brown leather for Cassina

Gianfranco Frattini is widely regarded as a mid-century master of Italian modern design. He was an award-winning architect and designer, and specialized in creating furniture and decor that is both decorative and practical — Frattini’s vintage desks, armchairs, nesting tables and other works are celebrated for their sophisticated merging of function and form.

Born in Padua in 1926, Frattini studied architecture at the Polytechnic University of Milan. He later apprenticed with his teacher and mentor, Gio Ponti. Through Ponti — arguably the most important figure in 20th-century Italian architecture and design — Frattini met many notable modernist designers such as Oscar Niemeyer and Le Corbusier, but an introduction to famed Italian entrepreneur Cesare Cassina would prove incredibly significant in helping launch his career.

During the mid-1950s, Frattini began to collaborate with Cassina’s eponymous company. He designed the brand’s acclaimed leather and walnut Model 849 lounge chair — a winner of the Compasso d’Oro award — the Marema nesting tables and the iconic Sesann collection. The latter, an enduring 1970s suite of impossibly welcoming leather-covered seating, is now produced by Tacchini. In addition to Cassina, Frattini created furniture and lighting for other manufacturers such as Bernini, Arteluce, Artemide, Knoll and more.

While many of his designs incorporate glass, tubular steel and other materials, Frattini loved working with wood. The sculptural Albero bookcase — an innovative floor-to-ceiling structure made in walnut that swings on a 360-degree vertical swivel axis — is a striking example of Frattini’s dedication to traditional woodworking techniques. In the early 1970s, he traveled to Japan with friend and collaborator Pierluigi Ghianda — a master Milanese cabinet maker — in order to study the work of artisans in Kyoto. The trip inspired his design of the Kyoto table, a work of solid beech with Canaletto walnut inserts that is part of the permanent collection of the Milan Triennale’s Design Museum. The Kyoto and Albero have been revived by Poltrona Frau.

Frattini’s designs are in the permanent collections of prestigious museums such as the Museum of Modern Art and the Cooper Hewitt, Smithsonian Design Museum.

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Furniture manufacturer Cassina is a prolific design house for more reasons than one: It not only owns the licenses to an exquisite collection of iconic chairs, sofas, tables and other pieces from the 20th and 21st centuries but also produces original works that are characterized by innovation and the finest Italian craftsmanship.

Cassina’s illustrious legacy includes being one of the first companies to bring industrial design to Italy in the 1950s. Founded in 1927 in Meda, Italy, by brothers Cesare and Umberto Cassina, the Italian manufacturing giant originally specialized in bespoke woodworking. In nearly a century since its founding, the company has shown incredible foresight about design trends and the evolution of technology.

In 1964, Cassina signed an exclusive licensing agreement to manufacture furniture by Le Corbusier and his collaborators — such as the LC4 chaise longue made with trailblazing French modernist Charlotte Perriand and Pierre Jeanneret — a move that would shape the future of the company. Cassina’s I Maestri collection is an ongoing initiative to restyle landmark designs from the 20th century, such as pieces by Gerrit Rietveld (the Red and Blue armchair from 1918), Charles Rennie Mackintosh, Erik Gunnar Asplund, Franco Albini and Frank Lloyd Wright. The company preserves the intentions and original styles of their designs but adds updated techniques, materials and processes — rendering them the best possible combination of past, present and future. The brand has also worked with contemporary icons like Zaha Hadid, Gio Ponti and Philippe Starck.

Cassina’s original designs are cutting-edge as well. They include pieces for everyday use, the development of which is guided by comfort and the marriage of Italian craftsmanship with industrial technology.

Some of Cassina’s pieces, both from its contemporary and I Maestri collections, can be found in the collections of museums like the Museum of Modern Art and the Vitra Design Museum. In 2014, the company became part of Haworth in its acquisition of Italian furniture group Poltrona Frau, and in 2015, Spanish designer Patricia Urquiola joined Cassina as its art director, leading the brand into its next century of inventive style.

Find a collection of new and vintage Cassina furniture on 1stDibs.