Louis Valat owned a business, based in St-Étienne (where else?), manufacturing and distributing bicycle frames, bicycle frame tubing and bicycle components. The business was certainly active as early as 1921 and as late as 1938, but I do not know when it was founded, or when it may have closed.

In 1934 Louis Valat (along with one Alfred Ondet) took out French Patent # 768,793 for a derailleur. L'Auto of 3/10/35, in its review of the 1935 Salon du Cycle in Paris, describes Louis Valat as showing a Super-Rapide (with an 'e') derailleur. You might guess that this was the derailleur described in the 1934 patent. It is unclear whether this derailleur has anything to do with the Super-Rapid brand.

Alfred Ondet also took out a number of other derailleur patents. As yet I do not know if any of these designs made it into production.