William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4158329 | Drip coffee brewer A drip coffee brewer for the brewing of a single serving of coffee consisting of a standard hot beverage cup, made of self-insulating material such as expanded polystyrene, with a portion of the bottom omitted or removed and with a cup-shaped capsule cont... | 06/19/1979 |