| Number | Name | Date | Kind |
|---|---|---|---|
| D247624 | Emundts et al. | Mar 1978 | S |
| D256017 | Emundts et al. | Jul 1980 | S |
| D274524 | Koval et al. | Jul 1984 | S |
| D329435 | Katoh et al. | Sep 1992 | S |
| D387068 | Kato et al. | Dec 1997 | S |
| D391581 | Kato et al. | Mar 1998 | S |
| D440234 | Katoh et al. | Apr 2001 | S |
| D498245 | Kuwae et al. | Nov 2004 | S |
| D519130 | Higashikawa et al. | Apr 2006 | S |
| D519131 | Kuwae et al. | Apr 2006 | S |
| D527026 | Kuwae et al. | Aug 2006 | S |
| D555674 | Kuwae et al. | Nov 2007 | S |
| D564544 | Higashikawa et al. | Mar 2008 | S |
| D602047 | Kushita et al. | Oct 2009 | S |
| D604749 | Kushita et al. | Nov 2009 | S |