| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-003682 | Feb 2009 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5207426 | Inoue et al. | May 1993 | A |
| D424047 | Chan | May 2000 | S |
| 6231444 | Goto et al. | May 2001 | B1 |
| D469767 | Hussaini et al. | Feb 2003 | S |
| D491183 | Swan et al. | Jun 2004 | S |
| D531228 | Ashida et al. | Oct 2006 | S |
| D543246 | Ashida et al. | May 2007 | S |
| D556835 | Ashida et al. | Dec 2007 | S |
| 7314413 | Ogata et al. | Jan 2008 | B2 |
| D561190 | Goto | Feb 2008 | S |
| 7377851 | Goto et al. | May 2008 | B2 |
| D571368 | Salter | Jun 2008 | S |
| D578167 | Harris | Oct 2008 | S |
| 20050269769 | Naghi et al. | Dec 2005 | A1 |
| 20090227381 | Snavely, II | Sep 2009 | A1 |