Semperit
Semperit AG Holding is a manufacturer of industrial polymer and plastic products based in Vienna, Austria. From the middle 20th century, it produced bicycle tires for the Austrian road bicycle sold by Sears & Roebuck, including the classic white wall tires. Semperit is listed on the Vienna Stock Exchange, 50% of the company is owned by "B&C Holding", with the rest being free float. History. 1824 Johann Nepomuk Reithoffer receives the patent for waterproof fabrics