The Weber-Stephen Products LLC is a privately held American manufacturer of charcoal, gas and electric outdoor grills with related accessories. In 2004, Weber-Stephen acquired some assets of competitor Ducane at a bankruptcy sale. It also owns restaurants and publishes cookbooks. The company was family owned until it sold a majority stake to BDT Capital Partners in 2010. Weber-Stephen was originally incorporated on May 8, 1893 as Weber Bros. Metal Works. In 1951, the original round charcoal kettle grill was built by George Stephen Sr., a then part-owner of the sheet metal shop in Chicago who sought to improve on the brazier he had been using to cook with at home. The grill was produced using two sheet metal half-spheres normally used as parts of buoys built in his shop. Shortly thereafter he began selling the invention, which he called 'Georges Barbecue Kettle', for which there was considerable demand.