E06C 1/381
Ladders with rungs or treads attached only to one rigid longitudinal member
Official title: {Ladders with rungs or treads attached only to one rigid longitudinal member}
E06C1/381 (Ladders with rungs or treads attached only to one rigid longitudinal member) appears on 132 US grants and 112 published applications in this corpus.
Search patents in E06C- Granted patents
- 132
- Published applications
- 112
- Assignees
- 52
- Inventors
- 195
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 0 |
| 2003 | 3 | 3 |
| 2004 | 2 | 3 |
| 2005 | 2 | 4 |
| 2006 | 0 | 0 |
| 2007 | 1 | 4 |
| 2008 | 0 | 5 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 3 | 3 |
| 2012 | 2 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 3 |
| 2015 | 3 | 6 |
| 2016 | 1 | 7 |
| 2017 | 6 | 4 |
| 2018 | 1 | 5 |
| 2019 | 2 | 7 |
| 2020 | 0 | 0 |
| 2021 | 5 | 7 |
| 2022 | 2 | 11 |
| 2023 | 4 | 10 |
| 2024 | 4 | 7 |
| 2025 | 9 | 9 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Portable treestand and climbing stick system21 Jul 2026US 12,685,306 B1HBTek, Inc.
- Climbing stick7 Jul 2026US 12,674,356 B2Latitude Outdoors, LLC
- One piece climbing stick design7 Jul 2026US 12,674,358 B2
- Climbing stick with unitary step and tree engaging structure23 Jun 2026US 12,662,875 B2HBTek, Inc.
- Utility pole step3 Feb 2026US 12,540,507 B2Western Utility Solutions, Inc.
- One piece climbing stick design1 Oct 2026US 2026/0298028 A1
- Climbing stick17 Sep 2026US 2026/0273346 A1Latitude Outdoors, LLC
- Utility pole step14 May 2026US 2026/0132678 A1Western Utility Solutions, Inc.
- Modular Ladder Assembly14 May 2026US 2026/0132679 A1
- Rotating Ladder for a Boat23 Apr 2026US 2026/0109432 A1OPACMARE S.r.l.
Most cited
By later US patents