In recent years, Frankes work in Gelsenkirchen has been rediscovered and re-evaluated by exhibitions and publications.

Franke's most popular buildings were designed in the Brick-expressionist style, which was common in the 1920s Germany.

They are characterized by the use of reddish brown brick and its setting to patterns and plastic elements on Facades, added to mostly rhythmic surface schemes.

Playing with the angular, raw stone leads to a special charm, completed by carefully balanced total composition.

Also the contemporary liking for triangle and parabola forms reflects in his designs of this period.