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 |
| 6577365 | Method and apparatus to form liquid crystal alignment layer Disclosed is a method for forming an alignment layer for use in a liquid crystal display cell. The present invention includes a method of determining ion beam source operation parameters to provide a twist angle that is less than a predetermined maximum t... | 06/10/2003 |
| 6529189 | Touch screen stylus with IR-coupled selection buttons The invention is embodied in a wireless stylus that incorporates, for example, an infrared emitter for communicating with a receiver associated with a computer. The stylus is provided with push-buttons near its tip that can be actuated by the user during ... | 03/04/2003 |
| 6440560 | Nanoparticles formed with rigid connector compounds The present invention relates to a novel organosilicon particle having the formula Sia Ob Cc Hd. The particle may be coated with an organic film, preferably a rigid connector compound. The present invention also... | 08/27/2002 |
| 6437422 | Active devices using threads Active devices that have either a thread or a ribbon geometry. The thread geometry includes single thread active devices and multiple thread devices. Single thread devices have a central core that may contain different materials depending upon whether the... | 08/20/2002 |