| Number | Date | Country | Kind |
|---|---|---|---|
| 2008-028353 | Nov 2008 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 6174208 | Chen | Jan 2001 | B1 |
| D464323 | Harasawa et al. | Oct 2002 | S |
| D481996 | Kihira et al. | Nov 2003 | S |
| D494545 | Kuroda et al. | Aug 2004 | S |
| D556136 | Shiga et al. | Nov 2007 | S |
| D592150 | Ogata et al. | May 2009 | S |