| Number | Name | Date | Kind |
|---|---|---|---|
| D358616 | Chung-Po | May 1995 | |
| D384705 | Muraki et al. | Oct 1997 | |
| D392688 | Isetani et al. | Mar 1998 | |
| D403024 | Muraki et al. | Dec 1998 | |
| 4960117 | Moncrief et al. | Oct 1990 | |
| 5299810 | Pierce et al. | Apr 1994 | |
| 5713794 | Shimojima et al. | Feb 1998 | |
| 5795224 | Yoshida | Aug 1998 |