Chewing Gum

On 28 December 1869, William Finley Semple (1832-1923) a dentist from Ohio, filed a patent (number 98,304) on chewing gum.However, five months earlier Amos Tyler had already received a patent for a gum consisting of white rosin (pine resin) and olive oil, heated and mixed. Semple’s gum was made out of rubber dissolved in naphtha […]

Chewing Gum