Pyrex is a brand of glassware introduced by the Corning Glass Works in 1915 in Corning, New York. Originally developed using low-thermal-expansion borosilicate glass, it was designed to be resistant to thermal shock, making it ideal for both laboratory and kitchen use. Over the years, Pyrex became a household name known for its durable glass bakeware and has expanded into various kitchen products. In the 1990s, production for the U.S. consumer market switched to using tempered soda-lime glass, while the borosilicate form is still commonly used in Europe and for laboratory equipment. Pyrex remains synonymous with reliability and innovation in glassware.