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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| Application No. | Application Title | Issue Date |
| 20100263848 | Aluminum-Aluminum Nitride composite material, manufacturing method thereof and heat exchanger including the same Molten aluminum is heated in the range of 900° C. to 1300° C. under a nitrogen atmosphere using magnesium as an auxiliary agent to form aluminum nitride directly on the molten aluminum and bond the aluminum nitride to the aluminum so that an Al—AlN composite materia... | 10/21/2010 |
| 20100101371 | ROTARY STIRRING DEVICE FOR TREATING MOLTEN METAL A rotary device for treating molten metal, said device comprising a hollow shaft (30) at one end of which is a rotor (40), said rotor (40) having:—a roof (42) and a base (44), said roof (42) and base (44) being spaced a... | 04/29/2010 |
| 20090229415 | Molten aluminum refining and gas dispersion system Aspects of this molten aluminum refining system include a rotor based injection system which provides for the injection and dispersion of both gas and flux for refining molten aluminum.... | 09/17/2009 |
| 20090071294 | Rotary Stirring Device for Treating MoltenMetal The invention relates to a rotary device for dispersing a gas in a molten metal. The device comprises a hollow shaft at one end of which is attached a rotor. The rotor has a roof and a base which are spaced apart and connected by a plurality of vanes. A compartment is d... | 03/19/2009 |
| 20080307927 | In-Line Salt Refining of Molten Aluminium Alloys The present invention describes an apparatus and a process for in-line substantially continuous degassing of aluminium and/or aluminium alloys, in absence of chlorine and through the injection of at least one metal halide salt that includes a halogen and water and an in... | 12/18/2008 |
| 20080066834 | Direct-Fired Furnace Utilizing an Inert Gas to Protect Products Being Thermally Treated in the Furnace A heating system includes a furnace configured to receive a product to be thermally treated within the furnace, where the furnace includes at least one burner to generate combustion gases from a source of oxygen and a carbon-based fuel source provided to the burner, and... | 03/20/2008 |
| 20080003127 | Non-Ferrous Metal Cover Gases Disclosed are cover gas compositions comprising fluoroolefins for impeding the oxidation of molten nonferrous metals and alloys, such as magnesium.... | 01/03/2008 |
| 20080000647 | Non-Ferrous Metal Cover Gases Disclosed are cover gas compositions comprising at least one pentafluoropropane for impeding the oxidation of molten nonferrous metals and alloys, such as magnesium.... | 01/03/2008 |
| 20050017417 | Material submergence system A gas injection tube includes a first end adapted to connect to a reactive gas source and a second end. A tube base attaches to the second end of the gas injection tube. The gas injection tube includes a passageway and the tube base includes a channel. The passageway co... | 01/27/2005 |