E06C 1/22
With extensible
Official title: with extensible, e.g. telescopic, ladder parts or struts
E06C1/22 (With extensible) appears on 117 US grants and 112 published applications in this corpus.
Search patents in E06C- Granted patents
- 117
- Published applications
- 112
- Assignees
- 38
- Inventors
- 183
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 4 |
| 2004 | 2 | 1 |
| 2005 | 3 | 4 |
| 2006 | 0 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 5 |
| 2010 | 0 | 2 |
| 2011 | 2 | 5 |
| 2012 | 3 | 4 |
| 2013 | 3 | 2 |
| 2014 | 0 | 1 |
| 2015 | 3 | 4 |
| 2016 | 2 | 2 |
| 2017 | 5 | 4 |
| 2018 | 1 | 7 |
| 2019 | 5 | 10 |
| 2020 | 8 | 9 |
| 2021 | 4 | 8 |
| 2022 | 7 | 6 |
| 2023 | 9 | 7 |
| 2024 | 2 | 9 |
| 2025 | 10 | 3 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Single handrail telescopic ladder21 Apr 2026US 12,607,064 B1
- Ladder that facilitates the contraction of handrails14 Apr 2026US 12,601,221 B1
- Stepladder with stabilizer10 Feb 2026US 12,546,167 B2D & D Ventures of Jupiter, LLC
- Ladders and ladder bracing13 Jan 2026US 12,523,095 B2Little Giant Ladder Systems, LLC
- Ladder storage devices13 Jan 2026US 12,523,097 B2
- Domestic hydraulic stepladder characterized by infinitely variable height for steps and platform17 Sep 2026US 2026/0275810 A1Hitachi High -Tech Corpo
- Telescopic ladder30 Jul 2026US 2026/0218569 A1Guangdong Wright Housewares Co.,Ltd.
- Portable safety ladder2 Jul 2026US 2026/0185404 A1Korea Occupational Safety and Health Agency
- Foldable work platform ladder2 Jul 2026US 2026/0185405 A1Duarib Group
- System and method for joining ladders in multiple configurations12 Feb 2026US 2026/0043259 A1
Most cited
By later US patents
- Ladders, ladder components and related methods85US 8,186,481 B2Wing Enterprises, Incorporated · 2012
- Longitudinally variable ladder64US 4,210,224 A1980
- Adjustable extension stepladder58US 5,590,739 A1997
- Method of manufacturing a fiberglass ladder57US 4,371,055 ALittle Giant Industries, Inc. · 1983
- Fiberglass ladder57US 4,376,470 ALittle Giant Industries, Inc. · 1983