A47L 3/00
Safety devices for use in window-cleaning
Official title: Safety devices for use in window-cleaning (safety belts A62B35/00; for scaffolding in general E04G; for ladders E06C)
A47L3/00 (Safety devices for use in window-cleaning) appears on 24 US grants and 25 published applications in this corpus.
Search patents in A47L- Granted patents
- 24
- Published applications
- 25
- Assignees
- 12
- Inventors
- 35
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 4 |
| 2017 | 2 | 1 |
| 2018 | 4 | 5 |
| 2019 | 1 | 3 |
| 2020 | 4 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Automated building washing apparatus14 Oct 2025US 12,442,206 B2
- Working system5 Aug 2025US 12,378,783 B2Hangzhou Fuya Science and Technology Co., Ltd.
- Glass-wiping robot4 Jan 2022US 11,213,176 B2Ecovacs Robotics Co., Ltd.
- Redundant adjustable lanyard27 Oct 2020US 10,814,149 B2Jimi IP, LLC
- Glass-wiping robot13 Oct 2020US 10,799,079 B2Ecovacs Robotics Co., Ltd.
- Cleaning support device and method of use26 Sep 2024US 2024/0315502 A1
- Automated building washing apparatus2 Mar 2023US 2023/0067008 A1
- Cleaning apparatus for cleaning both sides of a glass panel22 Apr 2021US 2021/0113036 A1Fairway Electronic Co., Ltd.
- Working system24 Dec 2020US 2020/0399911 A1Hangzhou Fuya Science and Technology Co., Ltd.
- Glass-wiping robot13 Aug 2020US 2020/0253434 A1Ecovacs Robotics Co., Ltd.
Most cited
By later US patents
- Window platform and scaffolding device30US 5,823,289 A1998
- Securing an air conditioning unit to a building by applying force to an interior and an exterior surface of the building29US 9,447,916 B2Nation Wide Products LLC · 2016
- Window cleaner's safety line anchor20US 4,932,185 A1990
- Securing an air conditioning unit to a building by applying force to an interior and an exterior surface of the building20US 9,605,870 B2Nation Wide Products LLC · 2017
- Supporting an object at a window of a building by applying opposing forces to an interior surface and an exterior surface of the building with a first member and second member joined about their intermediate sections18US 9,909,712 B1Nation Wide Products LLC · 2018