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An Italian semiconductor manufacturer formed by Olivetti and Telettra
1957 Società Generale Semiconduttori was founded by Adriano Olivetti.
Later merged with ATES (Aquila Tubi e Semiconduttori), a vacuum tube and semiconductor maker headquartered in the Abruzzese city of l'Aquila, which in 1961 changed its name to Azienda Tecnica ed Elettronica del Sud and relocated its manufacturing plant to the outskirts of the Sicilian city of Catania.
1968 Fairchild withdrew from the joint venture because difficulties in their main business and the different direction that the market was taking in Europe compared with USA.
1972 SGS Microelettronica was formed from the previous merger of the two companies - ATES and SGS.
1987 Ranked 14th in a list of top semiconductor suppliers, with annual sales exceeding $800 million. The company aggressively pursued a strategy of consolidation within the semiconductor industry
1987 STMicroelectronics was formed by the merger of semiconductor companies SGS Microelettronica (Società Generale Semiconduttori) of Italy and Thomson Semiconducteurs. At the time of the merger the company was known as SGS-THOMSON
1998 Renamed following the withdrawal of Thomson SA as an owner.