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 |
| PP18883 | Dianella revoluta plant named ‘DTN03’ ‘DTN03’ is a distinctive variety of Dianella revoluta, which is characterized by its combination of bluish-green leaf color, strong leaf glaucosity, very short height, erect growth habit, very dense shoots with very short internodes, and narrow leaf blade... | 06/03/2008 |
| PP18737 | Dianella tasmanica plant named ‘TR20’ ‘TR20’ is a distinctive variety of Dianella tasmanica with a clumping habit, which is characterized by the combination of a large flower cluster with blue flowers, green foliage with red basal shoots and red green lower leaf areas, which changes to a redd... | 04/22/2008 |
| PP18505 | Dianella caerulea plant named ‘DCNCO’ ‘DCNCO’ is a distinctive variety of Dianella caerulea which is characterized by the combination of its densely tufted, slightly spreading and semi-compact growth habit, pale blue flower colour, a general absence of canes, and a reduced tendency to fall ov... | 02/19/2008 |
| PP18454 | Dianella revoluta plant named ‘DRG04’ ‘DRG04’ is a distinctive variety of Dianella revoluta, which is characterized by the combination of a dense compact clumping habit with red basal shoots and a slight weeping of clumps with age. ‘DRG04’ is further characterized by its glaucous leaves, ... | 01/22/2008 |
| PP18452 | Dianella caerulea plant named ‘DCMP01’ ‘DCMP01’ is a distinctive variety of Dianella caerulea which is characterized by the combination of its dense growth, slightly spreading and compact growth habit, purple-blue flower color, and short canes with very short internodes, which is unusual for a... | 01/22/2008 |
| PP17998 | Dianella caerulea plant named ‘DBB03’ ‘DBB03’ is a distinctive variety of Dianella caerulea, which is characterized by the combination of its open growth, a blue-green foliage, pale blue flowers, slightly spreading and semi-compact growth habit, and an absence of canes, which is unusual for a... | 09/11/2007 |
| PP17719 | Dianella revoluta plant named ‘DR5000’ ‘DR5000’ is a distinctive variety of Dianella revoluta, which is characterized by its combination of bluish leaf color, short height, upright growth habit, very dense shoots, and narrow-to-medium leaf blade. ... | 05/15/2007 |
| PP15583 | Lomandra longifolia plant named ‘LM400’ ‘LM400’ is a distinctive variety of Lomandra longifolia which is characterized by the combination of its dwarf, compact growth habit; its fine, narrow leaf blade; and the blue/grey overall color of the leaf blade. ... | 02/22/2005 |
| PP15420 | Lomandra plant named ‘LM300’ A new and distinct variety of Lomandra longifolia plant, designated ‘LM300’, is characterized by a fine, narrow leaf blade, and compact habit as compared with other varieties of Lomandra longifolia. ‘LM300’ is further characterized by a yellow ... | 12/14/2004 |
| 6732666 | Trays for plant borders and methods for planting plant borders A plant border assembly includes a plant tray defining a cavity and a top opening communicating with the cavity. The cavity has a width and a length that is greater than the width. The plant border assembly further includes a plant border including a growing medium ... | 05/11/2004 |