Complex sentence: In 1955, the businessman "Ernst Kronreif" became shareholder of the company, on aquiring a sizable portion of the company it was re-named "Kronreif, Trunkenpolz, Mattighofen".
Split into simpler sentences: In 1955, a businessman "Ernst Kronreif" became shareholder of the company, on aquiring a sizable portion of the company. It was then renamed "Kronreif, Trunkenpolz, Mattighofen".