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 |
| D652080 | Mechanical pencil | 01/10/2012 |
| D648799 | Correction tape transcriber | 11/15/2011 |
| D648798 | Correction pen | 11/15/2011 |
| D648790 | Ballpoint pen | 11/15/2011 |
| D648789 | Ballpoint pen | 11/15/2011 |
| D641971 | Lead case | 07/26/2011 |
| D630247 | Mechanical pencil | 01/04/2011 |
| D629461 | Ballpoint pen | 12/21/2010 |
| D620524 | Ballpoint pen | 07/27/2010 |
| D611535 | Mechanical pencil | 03/09/2010 |
| D608392 | Ballpoint pen | 01/19/2010 |
| D597600 | Ballpoint pen | 08/04/2009 |
| 7540679 | Variable grip structure A variable grip structure has a shaft body formed of plural shaft portions that are rotatable relative to one another. An elastic finger-grip member encircles the shaft body and has its forward and rearward ends fixed to different shaft portions so that relative rot... | 06/02/2009 |
| D587752 | Ballpoint pen | 03/03/2009 |
| D585936 | Ballpoint pen | 02/03/2009 |
| D584357 | Cap for a writing instrument | 01/06/2009 |
| D584356 | Cap for electronic pen | 01/06/2009 |
| D580979 | Cap for a writing instrument | 11/18/2008 |
| D576676 | Ballpoint pen | 09/09/2008 |
| D576678 | Cap for a writing instrument | 09/09/2008 |
| D575338 | Ballpoint pen | 08/19/2008 |
| D572756 | Mechanical pencil | 07/08/2008 |
| D569909 | Marking pen | 05/27/2008 |
| D569437 | Cap for writing instrument | 05/20/2008 |
| D569436 | Cap for a writing instrument | 05/20/2008 |
| D562895 | Ballpoint pen | 02/26/2008 |
| 7331730 | Retractable writing material This is a retractable-nib writing tool having a retractable writing body in a shaft tube and having a sealing lid and a sealing tube which seal the writing nib of the writing body in association with the forward and backward movements of the writing body. In this re... | 02/19/2008 |
| D549779 | Grip for a writing instrument | 08/28/2007 |
| D548280 | Ballpoint pen | 08/07/2007 |
| D547801 | Marking pen | 07/31/2007 |
| D542350 | Ballpoint pen | 05/08/2007 |
| D541869 | Case for refillable leads for a mechanical pencil | 05/01/2007 |
| D535698 | Cap for writing instrument | 01/23/2007 |
| 7128487 | Mechanical pencil In a mechanical pencil, the dispersion range of the diameter of a lead is allowable to a certain extent, but if by chance a lead having the maximum diameter is used the lead may not be delivered. This is because there is exceeded the allowable range of the elastic d... | 10/31/2006 |
| 6431178 | Hair dyeing tool having dispensing mechanism A hair dyeing tool including a fluid storage chamber defined within a container body and adapted to store a coating liquid therein and a coating member having a comb member disposed forwardly of the container body. The container body serves directly as th... | 08/13/2002 |
| 6400359 | Apparatus for detecting an approaching conductor, or an approach point of a conductor and an electrostatic capacity type touch panel apparatus There are provided an apparatus for detecting an approaching conductor and an approach point or position of a conductor, in which a signal processing is simply performed and an improvement in the noise resistance is performed without the influence of a fl... | 06/04/2002 |
| 6390706 | Retractable writing implement A retractable-type writing instrument has a tubular body having a longitudinal axis, a front end, a rear end, and a tip disposed at the front end. A writing medium is disposed in the tubular body for undergoing movement in an axial direction along the lon... | 05/21/2002 |
| 6373474 | Real contact type touch panel apparatus A touch panel apparatus has a sensor panel using a tin oxide resistive film that avoids the palm effect and has an improved noise margin and S/N ratio. A finger or conductor is brought into direct contact with the touch panel and injected with an AC signa... | 04/16/2002 |
| 6210063 | Knock type applicator A knock type applicator includes a cylindrical shell having a coating liquid storage chamber, a writing tip slidably inserted into an opening portion formed in a distal end of the cylindrical shell, and a valve mechanism between the writing tip and the co... | 04/03/2001 |
| 6089775 | Retractable-lead mechanical pencil A slider type mechanical pencil has an outer tubular member having a front end and a rear end. An inner tubular member is disposed in the outer tubular member for axial movement therein and has a lead advancement mechanism for axial movement within the ou... | 07/18/2000 |