1758 - Johann Rudolf Geigy-Gemuseus (1733-1793) deals in materials, chemicals, dyes and drugs, based in Basle, Switzerland

1857 - Johann Rudolf Geigy Merian (1830-1917) and Johann Müller-Pack build a mill and dye extraction plant;

1859 - begin production of fuchsine synthetic dye

1901 - company incorporated and trades as a limited company

1920 - Geigy Colour Company Limited begins trading in Manchester

1938 - pharmacueticals production begins

1970- merges with Ciba to form Ciba-Geigy