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Pyroceram is a material developed and trademarked by Corning Glass during the 1950s. Its development has been traced to Corning's work in developing photosensitive glass. Corning credits S. Donald Stookey with its discovery; while conducting research on photosensitive glass, Stookey noted that an accidentally overheated fragment of the glass resisted breakage when dropped.
After about 30 years of informal use as a standard in high heat (1000 degrees Celsius) applications, Pyroceram 9606 was approved as a certified reference material.