| Number | Date | Country | Kind |
|---|---|---|---|
| 2006-027115 | Oct 2006 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 1346694 | Bayles et al. | Jul 1920 | A |
| 4670814 | Matsui et al. | Jun 1987 | A |
| 4853827 | Hernandez | Aug 1989 | A |
| 6407907 | Ahiko et al. | Jun 2002 | B1 |
| D493423 | Kubota et al. | Jul 2004 | S |
| D493424 | Kubota et al. | Jul 2004 | S |
| D494931 | Kubota et al. | Aug 2004 | S |
| D512375 | Kubota et al. | Dec 2005 | S |
| 6989289 | Shiraishi et al. | Jan 2006 | B1 |
| 7054141 | Sakaguchi et al. | May 2006 | B2 |
| 20030094355 | Angst | May 2003 | A1 |
| 20050280978 | Sakaguchi et al. | Dec 2005 | A1 |
| 20070236867 | Hossick-Schott et al. | Oct 2007 | A1 |
| Number | Date | Country |
|---|---|---|
| 2003-115418 | Apr 2003 | JP |
| 2006-100372 | Apr 2006 | JP |
| 2006-173441 | Jun 2006 | JP |