| Country | Patent Number |
|---|---|
| US | 11,442,707 |
| US | 11,113,041 |
| US | 10,877,736 |
| US | 10,540,153 |
| US | 10,216,494 |
| JP | 6770653 |
| JP | 7093387 |
| CN | 110325961 B |
This list is not exhaustive. Other applicable patents exist. Additional patent protection in Europe, Canada, India, Hong Kong, and China.