Production

Simson Rosenau initially ran a cloth shop at Deininger Straße 15. Later, he started a loden factory together with Gustav Löwengard, which he continued on his own after Gustav Löwengard's demise. The loden factory was located on the road to Luntenbuck, which ran parallel to the Stuttgart railroad line. In the 1920s, the factory passed to Wilhelm Busse and was moved further out into a modern plant on Nürnberger Strasse.

Julius Siegbert and his wife Sofie, née Aufhäuser, were deported on April 2, 1942, from Nördlingen via Munich to Piaski, where they were murdered.

The wine wholesaler Seligmann Simon had its origins in 1856 in Gensingen near Bingen and was first operated as a wine commission business. In 1860, the headquarters were moved to Büdesheim near Bingen. Finally, in December 1872, the business was moved to Bingen itself in the stately premises at Schloßbergstraße 1-3 and  with the entry of the three sons Elias, Moritz and Julius Simon as partners in the company, it developed into one of the most important wine wholesalers in the Rhineland wine-growing region.

The Katzauer brothers founded the "Lack- und Farbengroßhandlung Gebrüder Katzauer" in 1896. Initially still a trading business, they began producing their own window putty and various lime paints at the end of the 19th century. The acquisition of a 20-hectare site in Talstrasse in the early 1920s also laid the foundation for the chemical production of inorganic pigments. With this product range, the Bruchsaler Farbenfabrik achieved an international breakthrough.