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 |
| 7152664 | Incubation and storage device, in particular for specimens of organic material An incubation and storage device, in particular for specimens of organic material, is provided. Specifically, boundary surfaces of the inner space of the incubation and storage device are thermally connected to heat transfer elements that are attached on the outside... | 12/26/2006 |
| 6431460 | Incubating box An incubating box includes a container with a flange, an inlet, holding portions, a space, protrusions and supports; a bed which is placed inside the space and supported by the protrusions, a retaining device which is arranged in the recess and supported ... | 08/13/2002 |
| 5823143 | Newborn animal incubator for use in conjunction with an automobile An incubator taken directly into the field where birthing of newborn animals occurs. To facilitate easy handling and to provide durable construction, the incubator has a support frame that protects the components against damage during transportation. The ... | 10/20/1998 |
| 5542375 | Egg incubation system and method An improved system for the incubation of exotic bird eggs contains a flexible bladder as an essential component. The system includes an incubation unit, system heat exchange liquid, a heating unit to warm the heat exchange liquid, a pump unit, and conduit... | 08/06/1996 |
| 5336156 | Infant incubator humidifier An infant incubator humidifier having a heater within a heater tower which, in turn, is in heat transfer disposition with a metal sleeve mounted within a water reservoir through which air which is to be humidified is passed. The metal sleeve has a wick di... | 08/09/1994 |
| 5025619 | Method and apparatus for incubating and hatching eggs An incubator for incubating and hatching eggs includes a removable air control unit for humidifying, heating or cooling, and circulating air in the incubator. The air control unit is positioned between a pair of racks containing egg trays with removable i... | 06/25/1991 |