The PYREX® brand story starts with equal parts of American invention and creativity. The heat-tempered glass that is the foundation of the Pyrex brand was created years earlier by Corning Glass scientists charged with developing lantern glass for railroads. They needed to tackle a particular problem—the heat of the lantern flame conspired with the cold air of winter to shatter traditional glass. They needed a glass that could handle changes in temperature. By 1913, the glass was used in a number of industrial applications. But it found its way into the kitchen when Bessie Littleton, wife of a Corning scientist, asked her husband to bring home some glass to use in place of a broken casserole dish. He gave her the sawed-off bottoms of some battery jars. A cake was baked, an iconic brand was born and, as they say, the rest was history.