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|religion = |footnotes = |signature = }} Waldo Lonsbury Semon (September 10, 1898 – May 26, 1999) was an American inventor born in Demopolis, Alabama. He is credited with inventing methods for making polyvinyl chloride useful. ==Biography== He was born on September 10, 1898. Semon is best known for inventing vinyl, the world's second most used plastic. He found the formula for vinyl by mixing a few synthetic polymers, and the result was a substance that was elastic, but wasn't adhesive. Semon worked on methods of improving rubber, and eventually developed a synthetic substitute. On December 11, 1935, he created ''Koroseal'' from salt, coke and limestone, a polymer that could be made in any consistency.〔Current Biography 1940, pp 723-24〕 Semon made more than 5,000 other synthetic rubber compounds, achieving success with ''Ameripol'' (AMERican POLymer) in 1940 for the B.F. Goodrich company.〔Current Biography 1940, p. 724〕 In all, Semon held 116 patents, and was inducted into the Invention Hall of Fame in 1995 at age 97. While at B.F. Goodrich, Semon supervised another notable chemist: Benjamin S. Garvey, who also later received the Charles Goodyear Medal. Semon is sometimes credited with inventing bubble gum, but this is inaccurate. He did invent an indigestible synthetic rubber substance that could be used as a bubble gum (and produced exceptionally large bubbles), but the product remained a curiosity and was never sold. Semon graduated from the University of Washington earning a BS in chemistry and a PhD in chemical engineering. He was awarded the Charles Goodyear Medal in 1944 and the Elliott Cresson Medal in 1964. He died on May 26, 1999. 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「Waldo Semon」の詳細全文を読む スポンサード リンク
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