What is "corningware"

Corning Ware, also written CorningWare, was originally a brand name for a unique glass-ceramic (Pyroceram brand) glass cookware resistant to thermal shock. It was first introduced in 1958 by Corning Glass Works. Corning Ware can be taken from the refrigerator or freezer and used directly on the stovetop, in an oven or microwave, under a broiler, for table / serving use, and when ready for cleaning put directly into a dishwasher.