| Number | Name | Date | Kind |
|---|---|---|---|
| RE31129 | Rasmussen | Jan 1983 | E |
| 4934435 | Regev | Jun 1990 | A |
| D446070 | Judkins | Aug 2001 | S |
| 6497264 | Paskevicius | Dec 2002 | B1 |
| 6543516 | Hwang | Apr 2003 | B2 |
| 7059377 | Nien et al. | Jun 2006 | B2 |
| 7523777 | Kim | Apr 2009 | B2 |
| 8127821 | Hsu et al. | Mar 2012 | B2 |
| D659456 | Marocco | May 2012 | S |
| 8220517 | Kollman et al. | Jul 2012 | B2 |
| 8281842 | Lin | Oct 2012 | B2 |
| 20050155722 | Colson et al. | Jul 2005 | A1 |
| 20060102293 | Wu | May 2006 | A1 |
| 20060219369 | Yu et al. | Oct 2006 | A1 |
| 20060254726 | Lin | Nov 2006 | A1 |
| 20080035277 | Lin | Feb 2008 | A1 |
| 20100269984 | Hanley et al. | Oct 2010 | A1 |
| 20100307699 | Chen | Dec 2010 | A1 |
| 20110067819 | Huang | Mar 2011 | A1 |
| 20110132554 | Lin | Jun 2011 | A1 |
| 20120234502 | Chen | Sep 2012 | A1 |
| 20120291965 | Marocco | Nov 2012 | A1 |