| Number | Name | Date | Kind |
|---|---|---|---|
| 5165257 | Corenblith | Nov 1992 | A |
| 6490886 | Steinhauer | Dec 2002 | B1 |
| 20120118015 | Soni | May 2012 | A1 |
| 20120291486 | Cardin | Nov 2012 | A1 |
| 20130015224 | Izkovitz | Jan 2013 | A1 |
| 20140196500 | Machini | Jul 2014 | A1 |
| 20140260424 | Warren | Sep 2014 | A1 |
| 20170068437 | Warren | Mar 2017 | A1 |
| 20180020788 | Parikh | Jan 2018 | A1 |
| 20180020789 | Parikh | Jan 2018 | A1 |
| 20180279725 | Berka | Oct 2018 | A1 |
| 20190082801 | Burton | Mar 2019 | A1 |
| Number | Date | Country |
|---|---|---|
| 0577494 | Jan 1994 | EP |
| 2015025265 | Feb 2015 | WO |