| Number | Date | Country | Kind |
|---|---|---|---|
| 30-2013-0012817 | Mar 2013 | KR | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5893798 | Stambolic et al. | Apr 1999 | A |
| D481702 | Takagi | Nov 2003 | S |
| 7018294 | Silverbrook et al. | Mar 2006 | B2 |
| 7209648 | Barber et al. | Apr 2007 | B2 |
| D550704 | Ichinose | Sep 2007 | S |
| D601171 | Shimizu | Sep 2009 | S |
| D609718 | Chang et al. | Feb 2010 | S |
| D686186 | Kaneko et al. | Jul 2013 | S |
| D694215 | Birger | Nov 2013 | S |