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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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| Number | Title | Issue Date |
| 5064106 | Metered dispensing package A package for dispensing premeasured quantities of a granular or powdered fluent material, having an elongate container with sloping shoulders and an open, upstanding neck surmounted by an overcap. The overcap has a topwall, a dispensing orifice, an outer... | 11/12/1991 |
| 5040783 | Rotary stacker A stacking device for forming stacks of articles of predetermined count, using a stacking wheel having a multiplicty of uniformly spaced peripheral slots. The slots are adapted to receive articles sequentially at a loading station and carry them to an unl... | 08/20/1991 |
