| Number | Name | Date | Kind |
|---|---|---|---|
| 4931054 | Gross | Jun 1990 | A |
| 4960421 | Daar et al. | Oct 1990 | A |
| 4988354 | Locke | Jan 1991 | A |
| 6248115 | Halk | Jun 2001 | B1 |
| 20020128664 | Moghadam | Sep 2002 | A1 |
| 20040087973 | Shobeiri | May 2004 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 11986148 | Nov 2007 | US |
| Child | 29294101 | US |