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:''For the programming language, see Pyrex (programming language). Not to be confused with PUREX.'' Pyrex (trademarked as PYREX) is a brand introduced by Corning Incorporated in 1915 for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware. Pyrex sold in the United States is now made of tempered glass; outside of North America the costlier borosilicate is still used. Corning no longer manufactures or markets Pyrex-branded borosilicate glass kitchenware and bakeware in the US, but Pyrex borosilicate products are still manufactured under license by various companies. World Kitchen, LLC, which was spun off from Corning in 1998, licensed the Pyrex brand for their own line of kitchenware productsdifferentiated by their use of clear tempered soda-lime glass instead of borosilicate. == History == Borosilicate glass was first made by German chemist and glass technologist Otto Schott, founder of Schott AG in 1893, 22 years before Corning produced the Pyrex brand. Schott AG sold the product under the name "Duran". In 1908, Eugene Sullivan, director of research at Corning Glass Works, developed Nonex, a borosilicate low-expansion glass, to reduce breakage in shock-resistant lantern globes and battery jars. Sullivan had learned about Schott's borosilicate glass as a doctoral student in Leipzig, Germany. Jesse Littleton of Corning discovered the cooking potential of borosilicate glass by giving his wife a casserole dish made from a cut-down Nonex battery jar. Corning removed the lead from Nonex and developed it as a consumer product.〔(Corning Pyrex Bakeware ), Carroll M. Gantz, Design Chronicles: Significant Mass-produced Designs of the 20th Century, Schiffer Publications, Ltd. 2005〕 Pyrex made its public debut in 1915 during World War I, positioned as an American-produced alternative to Duran. A Corning executive gave the following account of the etymology of the name "Pyrex": In the late 1930s and 1940s, Corning also introduced other products under the Pyrex brand, including opaque tempered soda-lime glass for bowls and bakeware, and a line of Pyrex Flameware for stovetop use; this borosilicate glass had a bluish tint caused by the addition of alumino-sulfate.〔(【引用サイトリンク】 title=Exploding Pyrex, Urban Legend reference )〕 In 1958 an internal design department was started by John B. Ward. He redesigned the Pyrex ovenware and Flameware. Over the years, designers such as Penny Sparke, Betty Baugh, Smart Design, TEAMS Design, and others have contributed to the design of the line. Corning divested its consumer products division in 1998, forming the company World Kitchen, LLC. Corning discontinued its production of Pyrex products, but still licensed the Pyrex brand name to other companies, including World Kitchen and Newell Cookware Europe. France-based cookware maker Arc International acquired Newell's European business in early 2006 and currently owns rights to the brand in Europe, the Middle East and Africa. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pyrex」の詳細全文を読む スポンサード リンク
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