| Country | Patent Number |
|---|---|
| US - (United States) | 6,990,770 |
| US - (United States) | 9,307,704 |
| US - (United States) | 9,301,458 |
| US - (United States) | 10,299,440 |
| US - (United States) | 10,379,877 |
| US - (United States) | 10,492,372 |
| US - (United States) | 10,492,373 |
| US - (United States) | 11,330,766 |
| US - (United States) | 11,382,279 |
| US - (United States) | 11,690,324 |
