| Number | Name | Date | Kind |
|---|---|---|---|
| 6572121 | Shih | Jun 2003 | B2 |
| D535714 | Cheng et al. | Jan 2007 | S |
| 7341261 | Shing | Mar 2008 | B2 |
| 7850175 | Wegener | Dec 2010 | B2 |
| 8308171 | Farrelly | Nov 2012 | B2 |
| 20040041359 | Im | Mar 2004 | A1 |
| 20100090423 | Farrelly | Apr 2010 | A1 |
| 20120285756 | Treadway | Nov 2012 | A1 |