E04G 3/28
Mobile scaffolds
Official title: Mobile scaffolds; Scaffolds with mobile platforms {(movable inspection or maintenance platforms for bridges E01D19/106, lifting devices for movable platforms, e.g. on vehicles B66F11/04)}
E04G3/28 (Mobile scaffolds) appears on 399 US grants and 337 published applications in this corpus.
Search patents in E04G- Granted patents
- 399
- Published applications
- 337
- Assignees
- 223
- Inventors
- 816
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 11 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 10 | 1 |
| 2002 | 4 | 9 |
| 2003 | 6 | 5 |
| 2004 | 5 | 5 |
| 2005 | 5 | 7 |
| 2006 | 1 | 9 |
| 2007 | 3 | 9 |
| 2008 | 0 | 4 |
| 2009 | 3 | 8 |
| 2010 | 11 | 7 |
| 2011 | 2 | 11 |
| 2012 | 7 | 9 |
| 2013 | 13 | 19 |
| 2014 | 9 | 15 |
| 2015 | 12 | 23 |
| 2016 | 12 | 17 |
| 2017 | 15 | 13 |
| 2018 | 20 | 28 |
| 2019 | 20 | 20 |
| 2020 | 26 | 21 |
| 2021 | 14 | 28 |
| 2022 | 13 | 18 |
| 2023 | 10 | 6 |
| 2024 | 18 | 22 |
| 2025 | 16 | 10 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Falling prevention structure for attached lift scaffold21 Apr 2026US 12,607,025 B2
- Hanging scaffold7 Apr 2026US 12,595,668 B2
- Platform positioning system, method of operating a platform positioning system, and wind turbine17 Feb 2026US 12,553,247 B2Siemens Gamesa Renewable Energy A/S
- Construction elevator device13 Jan 2026US 12,522,475 B2Hitachi, Ltd.
- Suspension work platform hoist system4 Nov 2025US 12,460,432 B2Sky Climber, LLC
- Dielectric hanging seat8 Oct 2026US 2026/0306883 A1
- Lightweight composite roofing support system16 Jul 2026US 2026/0201710 A1Phil Squared Roof Jack Systems LLC
- Self-climbing platform and method9 Jul 2026US 2026/0191187 A1
- Exterior wall repair method9 Jul 2026US 2026/0192465 A1Share-RIZ Co.,Ltd.
- Wall-Top Construction Creeper4 Jun 2026US 2026/0152954 A1
Most cited
By later US patents
- Structural member and structural systems using structural member50US 7,823,347 B12010
- Expansible corridor44US 4,620,612 ANisso Sangyo Co., Ltd. · 1986
- Modular scaffolding system44US 5,617,931 AL. E. Zygmun and Company, Inc. · 1997
- Remote-controlled system for treating external surfaces of buildings34US 5,240,503 A1993
- Foldable boom for mounting on a roof of a building34US 5,341,898 A1994