E06C 1/38
Special constructions of ladders
Official title: Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
E06C1/38 (Special constructions of ladders) appears on 846 US grants and 794 published applications in this corpus.
Search patents in E06C- Granted patents
- 846
- Published applications
- 794
- Assignees
- 287
- Inventors
- 1,252
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 11 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 10 | 0 |
| 1981 | 18 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 13 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 7 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 11 | 0 |
| 1998 | 18 | 0 |
| 1999 | 13 | 0 |
| 2000 | 20 | 0 |
| 2001 | 19 | 3 |
| 2002 | 23 | 20 |
| 2003 | 26 | 37 |
| 2004 | 27 | 32 |
| 2005 | 28 | 38 |
| 2006 | 25 | 22 |
| 2007 | 18 | 25 |
| 2008 | 7 | 22 |
| 2009 | 5 | 22 |
| 2010 | 12 | 22 |
| 2011 | 14 | 25 |
| 2012 | 14 | 20 |
| 2013 | 20 | 22 |
| 2014 | 23 | 30 |
| 2015 | 26 | 39 |
| 2016 | 24 | 35 |
| 2017 | 25 | 32 |
| 2018 | 25 | 35 |
| 2019 | 26 | 42 |
| 2020 | 25 | 48 |
| 2021 | 26 | 29 |
| 2022 | 28 | 47 |
| 2023 | 21 | 34 |
| 2024 | 15 | 33 |
| 2025 | 40 | 36 |
| 2026 | 28 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E06C 1/39Ladders having platforms431
- E06C 1/397Characterised by having wheels, rollers, or runners233
- E06C 1/381Ladders with rungs or treads attached only to one rigid longitudinal member132
- E06C 1/387Having tip-up steps117
- E06C 1/383Foldable ladders in which the longitudinal members are brought together on folding109
- E06C 1/382Tripod ladders11
Recent patents
- Folding ladder6 Oct 2026US 12,753,655 B2Jiaxing Jackson Travel Products Co., Ltd.
- Ladder step extension platform15 Sep 2026US 12,735,943 B2
- Foldable stair assembly8 Sep 2026US 12,728,899 B2Safesmart LLC
- Ladder safety system4 Aug 2026US 12,698,679 B1
- Portable treestand and climbing stick system21 Jul 2026US 12,685,306 B1HBTek, Inc.
- Platform lifting and moving mechanism and combined platform1 Oct 2026US 2026/0296514 A1Suzhou Zhongchuang Aluminum Co., Ltd.
- Kitchen helper folding step stool with spring loaded crossbar retainer1 Oct 2026US 2026/0298025 A1
- One piece climbing stick design1 Oct 2026US 2026/0298028 A1
- Spliced tread for ladder and folding ladder24 Sep 2026US 2026/0286778 A1
- Climbing stick17 Sep 2026US 2026/0273346 A1Latitude Outdoors, LLC
Most cited
By later US patents