| Number | Name | Date | Kind |
|---|---|---|---|
| D202428 | Weinstock | Sep 1965 | |
| 2884613 | Chandler, Jr. et al. | Apr 1959 | |
| 3210719 | Graeff | Oct 1965 | |
| 3391375 | Richards | Jul 1968 | |
| 4331375 | Takamatsu | May 1982 | |
| 5078613 | Salmon | Jan 1992 | |
| 5380222 | Kobayashi | Jan 1995 | |
| 5398166 | Yonezawa et al. | Mar 1995 | |
| 5424918 | Felps et al. | Jun 1995 | |
| 5442142 | Hayashi | Aug 1995 |