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 |
| 6715216 | Clothes dryer with fire suppression system A clothes dryer is provided with a fire detection and suppression system which releases a fire suppressing substance into the dryer chamber upon detection of a fire condition. The fire detection and suppression system includes, a controller, at least one temperature... | 04/06/2004 |
| 6619215 | Incinerator with a heat-insulating shield An incinerator includes a furnace, a heat-insulating shield, an air conduit, an air blower, and a dryer. The heat-insulating shield has a top wall, a vertically extending peripheral wall that extends downwardly from the top wall and that surrounds and tha... | 09/16/2003 |
| 6619216 | Incinerator with a dryer and a control unit for controlling temperature in the dryer An incinerator includes a furnace, a heat-insulating shield, an air conduit, an air blower, and a dryer. The heat-insulating shield has a top wall, a vertically extending peripheral wall that extends downwardly from the top wall and that surrounds and tha... | 09/16/2003 |
| 6560897 | Spray drying apparatus and methods of use Improved spray drying apparati, and methods of use thereof, have been developed. The spray drying equipment includes a primary drying chamber and a secondary drying apparatus which includes tubing having a length sufficient to increase the contact time be... | 05/13/2003 |
| 6519871 | Self programming clothes dryer system A method and apparatus for operating an automatic cycle of a clothes dryer wherein after initiation of an automatic cycle, a CPU displays the expected time remaining during the current cycle. At various times during the cycle, the expected time remaining ... | 02/18/2003 |
| 6493963 | Method and apparatus for dryness detection in a clothes dryer A method of programming and controlling an automatic cycle of a clothes dryer provides that, after positioning of a selection dial, a motor associated with the selection dial is rapidly moved to a predetermined location at a constant speed, while the time... | 12/17/2002 |
| 6401358 | Method and device for drying a rapidly conveyed product to be dried, especially for drying printing ink A method and an apparatus for drying a substance that is being rapidly conveyed in a conveyor apparatus, in particular for drying layers of printing ink on rapidly transported paper, wherein in a drying zone by means of incident electromagnetic radiation ... | 06/11/2002 |
| 5849388 | Article, apparatus and method for cooling a thermally processed material An article for cooling an imaging material which has been heated to a first temperature by a thermal processor. The article includes a first cooling section on which the imaging material rides after the imaging material exits the thermal processor. The fi... | 12/15/1998 |
| 5611935 | Method and device for treating sludge A method for treating sludge by dewatering to form thick sludge and drying to form dry sludge includes the steps of mechanically predewatering thick sludge to produce predewatered thick sludge and mixing the predewatered thick sludge with non-cooled dry s... | 03/18/1997 |
| 5410230 | Variable speed HVAC without controller and responsive to a conventional thermostat A system for conditioning air in a space by heating or cooling the air to change its temperature. A thermostat located within the space generates a two state temperature signal having a cyclic parameter which corresponds to the temperature of the air in t... | 04/25/1995 |
| 4202733 | Process and apparatus for preheating coal intended for use in coking installations Coal is preheated prior to passing it into a coking installation by feeding measured amounts of the relatively wet coal into and through one or more circulation dryers heated to an elevated temperature and collecting the hot coal in a collecting bin and a... | 05/13/1980 |
| 4152840 | Grain dryer control system A control system for a grain drying bin includes a pre-dry sensor mounted on the inside of a grain drying bin a short distance above the floor and a thermocouple grain temperature sensor mounted in the discharge tube of the grain drying bin. The discharge... | 05/08/1979 |
| 3946496 | Control system for grain drying bin A control unit sensitive to the condition of its ambient atmosphere is enclosed within an insulated housing over lateral openings in the discharge auger tube of a grain drying bin whereby gases surrounding the discharged grain circulated into contact with... | 03/30/1976 |