Pyrex was invented in 1913, and Corning Glass started selling it in 1915. It was promoted by Sarah Tyson Rover, editor of Ladies Home Journal and Good Housekeeping. Rover used demonstrations across the nation to help people get accustomed to cooking with PYREX, a clear borosilicate glass. Now PYREX is made with tempered soda-lime glass. Read The History of Pyrex Glass, or visit their history on the site by Pyrex.
