| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-003187 | Feb 2009 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4047526 | Reynolds et al. | Sep 1977 | A |
| 4820297 | Kaufman et al. | Apr 1989 | A |
| 4900321 | Kaufman et al. | Feb 1990 | A |
| 5045074 | Satterfield et al. | Sep 1991 | A |
| 5071570 | Shiraki et al. | Dec 1991 | A |
| 5102407 | Carmen et al. | Apr 1992 | A |
| 5141645 | Shiraki et al. | Aug 1992 | A |
| 5234403 | Yoda et al. | Aug 1993 | A |
| D339194 | Telang et al. | Sep 1993 | S |
| D347891 | Koch | Jun 1994 | S |
| D367110 | Cotter | Feb 1996 | S |
| 5523004 | Tanokura et al. | Jun 1996 | A |
| 5527472 | Bellotti et al. | Jun 1996 | A |
| 5648265 | Epstein | Jul 1997 | A |
| D383837 | Cotter | Sep 1997 | S |
| 5674199 | Brugger | Oct 1997 | A |
| D387157 | Cotter | Dec 1997 | S |
| 6387086 | Mathias et al. | May 2002 | B2 |
| 6589197 | Doi et al. | Jul 2003 | B1 |
| 6742760 | Blickhan et al. | Jun 2004 | B2 |
| 7264608 | Bischof et al. | Sep 2007 | B2 |
| 7309468 | Stevens et al. | Dec 2007 | B2 |
| 20050215975 | Mathias et al. | Sep 2005 | A1 |
| 20060243676 | Swift et al. | Nov 2006 | A1 |
| 20080241001 | Haywood et al. | Oct 2008 | A1 |
| 20090187153 | West et al. | Jul 2009 | A1 |