| 9993852 | Surface cleaning unmanned aerial vehicle | Aug 20, 14 | Jun 12, 18 | Elwha LLC, a limited liability company of the State of Delaware |
| 9896139 | Robot | Oct 27, 15 | Feb 20, 18 | Not available |
| 9743816 | Glass-wiping device having a suction apparatus | Apr 03, 13 | Aug 29, 17 | ECOVACS ROBOTICS CO., LTD. |
| 9681784 | Compact automated window washing apparatus | Oct 24, 13 | Jun 20, 17 | PACHANGA HOLDINGS, LLC |
| 9655484 | Autonomous planar surface cleaning robot | Dec 14, 15 | May 23, 17 | ECOVACS ROBOTICS, INC. |
| 9492044 | Glass wiping device and control method thereof | Aug 16, 12 | Nov 15, 16 | ECOVACS ROBOTICS CO., LTD. |
| 9487962 | Apparatus and method for cleaning façades on multi-story buildings | Mar 24, 11 | Nov 08, 16 | BRUNKEBERG SYSTEMS AB |
| 9468951 | Surface cleaning unmanned aerial vehicle | Apr 17, 15 | Oct 18, 16 | ELWHA LLC |
| 9445700 | Glass-wiping robot | Sep 26, 13 | Sep 20, 16 | ECOVACS ROBOTICS CO., LTD. |
| 9427121 | Glass-wiping robot having air-venting device | Sep 26, 13 | Aug 30, 16 | ECOVACS ROBOTICS CO., LTD. |
| 9386893 | Glass-wiping robot having air-venting device | Sep 26, 13 | Jul 12, 16 | ECOVACS ROBOTICS CO., LTD. |
| 9215956 | Glass window cleaning device and a control method therefor | Nov 04, 10 | Dec 22, 15 | INTELLECTUAL DISCOVERY CO., LTD., KOREA INSTITUTE OF ROBOT & CONVERGENCE, |
| 9198550 | Window cleaning apparatus and method of controlling the same | Feb 29, 12 | Dec 01, 15 | RF CO., LTD. |
| 9192966 | Automatic washing device for continuous surfaces, in particular solar thermal collectors, photovoltaic panels, continuous glazed building walls and similar surfaces | Nov 28, 12 | Nov 24, 15 | Washpanel S.R.L. |
| 9119510 | Glass-wiping device | Jan 16, 13 | Sep 01, 15 | ECOVACS ROBOTICS CO., LTD. |
| 9084519 | Cleaner and path controlling method thereof | Jun 13, 12 | Jul 21, 15 | Not available |
| 9022159 | Cleaning device for window glass | Sep 12, 11 | May 05, 15 | Fujii Denko Co., Ltd., Urakami LLC, |
| 9020618 | Accelerometer based controller and/or controlled device | Apr 26, 10 | Apr 28, 15 | EMPIRE TECHNOLOGY DEVELOPMENT LLC |
| 8959705 | Robot for cleaning smooth surfaces | Feb 04, 11 | Feb 24, 15 | CARL FREUDENBERG KG |
| 8826482 | Window cleaning apparatus and method for controlling movement thereof | Apr 29, 11 | Sep 09, 14 | INTELLECTUAL DISCOVERY CO., LTD., KOREA INSTITUTE OF ROBOT & CONVERGENCE, |