This is one of the only factories in the world still manufacturing Pyroceram-based cookware. It continues to be manufactured by Keraglass/Eurokera (a partnership between Corning and Saint-Gobain specializing in vitroceramics for cooktop panels and equipment for laboratories) in Bagneaux-sur-Loing, France. In December 2008, the Pyroceram-based line of CorningWare was reintroduced in the USA as CorningWare StoveTop. Ĭorelle Brands' (then known as 'World Kitchen') 2001 annual report indicated that the stovetop and dinnerware product lines were halted at the end of the century 'as part of a program designed to reduce costs through the elimination of under-utilized capacity, unprofitable product lines, and increased utilization of the remaining facilities.' While production continued in France, the product was temporarily unavailable in the USA and the brand was relaunched as a line of stoneware-based bakeware in 2001. Originally manufactured primarily in the USA, production of Pyroceram-based Corning Ware ceased in the States with the closure of the Martinsburg, West Virginia plant. Discontinuation and reintroduction in the USA Pyroceram was originally used in the ballistic missile program as a heat-resistant material for nose cones. He reached into the furnace with tongs to discard the sample, and it slipped and hit the floor without shattering. When he checked on his sample, the furnace was at 900 degrees and the glass had turned milky white. He was working with photosensitive glass and placed a piece into a furnace planning on heating it to 600 degrees Fahrenheit. Donald Stookey of the Corning Research and Development Division discovered Pyroceram, a white glass-ceramic material capable of withstanding a thermal shock of up to 450 K (840 ☏), by accident.

The stylized burner icon indicates pieces that are range-top safe.

Corningware grabit bowls