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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| Number | Title | Issue Date |
| 5783603 | Potassium hydroxycitrate for the suppression of appetite and induction of weight loss The present invention provides methods of suppressing appetite and causing weight loss by administering to a patient hydroxy citric acid in the form of a potassium salt extracted from Garcinia fruit. Methods of inhibiting cytoplasmic citric lyase and incr... | 07/21/1998 |