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 |
| 7563435 | Transparent lip treatment gel The present invention relates to transparent or clear emulsions for cosmetic or pharmaceutical use that are suitable for application to the human lips and to the facial area around the lips. The transparent emulsions of the present invention comprise an oil phase, c... | 07/21/2009 |
| 7488471 | Transparent oil-in-water emulsion The present invention relates to transparent or clear emulsions for cosmetic or pharmaceutical use. The transparent emulsions of the present invention comprise an oil phase, containing at least one lipophilic solvent; an aqueous phase; and an emulsifying system cont... | 02/10/2009 |
| 7192599 | Mattifying oil-in-water emulsion The present invention relates to cosmetic and pharmaceutical oil-in-water emulsions which have a mattifying effect when applied to the skin. The invention comprises a hydrophilic, non-organically modified magnesium aluminum silicate or a bentonite clay and a polyol ... | 03/20/2007 |