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William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.

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Inventor: Yoshio Fukuda

Address: Tsukuba, JP
No. of applications: 1
Last application issue date: 11/03/2005

Application No.	Application Title	Issue Date
20050245514	Novel physiologically active substances Compounds represented by the following general formula (I), pharmacologically acceptable salts thereof or hydrates of the same: (I) wherein W represents and R³, R⁷, R¹⁶, R¹⁷, R²⁰, R²¹and R^...	11/03/2005