E06C 9/00
Ladders characterised by being permanently attached to fixed structures
Official title: Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes (movable stairways E04F11/04 {; means for facilitating access to swimming pools E04H4/144})
E06C9/00 (Ladders characterised by being permanently attached to fixed structures) appears on 490 US grants and 320 published applications in this corpus.
Search patents in E06C- Granted patents
- 490
- Published applications
- 320
- Assignees
- 195
- Inventors
- 738
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 4 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 13 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 13 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 14 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 10 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 11 | 0 |
| 1999 | 18 | 0 |
| 2000 | 13 | 0 |
| 2001 | 11 | 4 |
| 2002 | 17 | 7 |
| 2003 | 12 | 12 |
| 2004 | 5 | 8 |
| 2005 | 11 | 13 |
| 2006 | 7 | 4 |
| 2007 | 3 | 12 |
| 2008 | 3 | 10 |
| 2009 | 2 | 5 |
| 2010 | 6 | 5 |
| 2011 | 7 | 7 |
| 2012 | 3 | 13 |
| 2013 | 7 | 12 |
| 2014 | 9 | 14 |
| 2015 | 13 | 20 |
| 2016 | 13 | 17 |
| 2017 | 13 | 18 |
| 2018 | 16 | 21 |
| 2019 | 15 | 19 |
| 2020 | 15 | 19 |
| 2021 | 13 | 19 |
| 2022 | 12 | 14 |
| 2023 | 10 | 13 |
| 2024 | 8 | 17 |
| 2025 | 16 | 7 |
| 2026 | 14 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrified fire fighting vehicle8 Sep 2026US 12,728,807 B2Oshkosh Corporation
- Modular rib for elevating platform1 Sep 2026US 12,722,957 B2Altec Industries, Inc.
- One piece climbing stick design7 Jul 2026US 12,674,358 B2
- Electrified fire fighting vehicle16 Jun 2026US 12,654,638 B2Oshkosh Corporation
- Electrified fire fighting vehicle17 Mar 2026US 12,576,802 B2Oshkosh Corporation
- One piece climbing stick design1 Oct 2026US 2026/0298028 A1
- Automatically retractable marine ladder3 Sep 2026US 2026/0258703 A1
- Combination step bolt and fall protection anchorage assemblies6 Aug 2026US 2026/0226759 A1
- Temporary Step and Support30 Jul 2026US 2026/0218571 A1
- Elements for connection to a wind turbine tower16 Jul 2026US 2026/0201749 A1Vestas Wind Systems A/S
Most cited
By later US patents
- Automatically retractable, rotatable step assembly75US 4,542,805 A1985
- Manhole structure and method of making same57US 4,275,757 A1981
- Detachable nestable mast steps54US 4,382,416 A1983
- Foldable vehicle ladder system48US 6,012,545 A2000
- Raw sewage disposal apparatus and prefab for accommodating the same45US 5,418,982 AJapanic Corporation · 1995