| Number | Name | Date | Kind |
|---|---|---|---|
| D388776 | Zhang et al. | Jan 1998 | |
| D392264 | Marshall, Jr. et al. | Mar 1998 | |
| D394250 | Maitra | May 1998 | |
| D397999 | Kovanen et al. | Sep 1998 | |
| D399836 | Wu et al. | Oct 1998 | |
| D400520 | Baker et al. | Nov 1998 | |
| D401230 | Mashall, Jr. et al. | Nov 1998 | |
| D402283 | Anderson et al. | Dec 1998 | |
| D403313 | Peppel | Dec 1998 |