| Number | Date | Country | Kind |
|---|---|---|---|
| 2013-002821 | Feb 2013 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| D267881 | Current | Feb 1983 | S |
| 4407211 | Kiyoshima | Oct 1983 | A |
| D307024 | Itoh et al. | Apr 1990 | S |
| D309739 | Itoh et al. | Aug 1990 | S |
| D321518 | Uchida | Nov 1991 | S |
| D321694 | Uchida | Nov 1991 | S |
| D338022 | Takada et al. | Aug 1993 | S |
| 5471941 | Sakuma | Dec 1995 | A |
| D372720 | Hattori et al. | Aug 1996 | S |
| D392294 | Kato et al. | Mar 1998 | S |
| D450721 | Kawaguchi | Nov 2001 | S |
| D462368 | Kuroki | Sep 2002 | S |
| D465793 | Takada et al. | Nov 2002 | S |
| D478337 | Kuroki | Aug 2003 | S |
| D478916 | Kuroki | Aug 2003 | S |
| D482702 | Kawaguchi | Nov 2003 | S |
| D524828 | Kuroki | Jul 2006 | S |
| D553650 | Muto | Oct 2007 | S |
| D555176 | Ogawa | Nov 2007 | S |
| D632706 | Hattori | Feb 2011 | S |
| D648757 | Muto | Nov 2011 | S |