| Number | Name | Date | Kind |
|---|---|---|---|
| 5359642 | Castro | Oct 1994 | A |
| 5485507 | Brown et al. | Jan 1996 | A |
| 5646839 | Katz | Jul 1997 | A |
| 5655013 | Gainsboro | Aug 1997 | A |
| 5926533 | Gainsboro | Jul 1999 | A |
| 5991376 | Hennessey et al. | Nov 1999 | A |
| 6054928 | Lemelson et al. | Apr 2000 | A |
| 6072860 | Kek et al. | Jun 2000 | A |
| 6173046 | Jagadish et al. | Jan 2001 | B1 |
| 6222914 | McMullin | Apr 2001 | B1 |
| 6327573 | Walker et al. | Dec 2001 | B1 |
| 6543686 | Ritter | Apr 2003 | B1 |
| Number | Date | Country |
|---|---|---|
| 2308474 | Jun 1997 | GB |
| WO 9918708 | Apr 1999 | WO |
| WO 0052610 | Sep 2000 | WO |
| Entry |
|---|
| International Search Report issued Sep. 9, 2002 PCT/US 01/41756. |