E04H 12/00
Towers
Official title: Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures (cooling towers E04H5/12; derricks for oil drilling E21B15/00)
E04H12/00 (Towers) appears on 3,633 US grants and 3,407 published applications in this corpus.
Search patents in E04H- Granted patents
- 3,633
- Published applications
- 3,407
- Assignees
- 1,620
- Inventors
- 5,539
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 17 | 0 |
| 1978 | 26 | 0 |
| 1979 | 19 | 0 |
| 1980 | 33 | 0 |
| 1981 | 24 | 0 |
| 1982 | 27 | 0 |
| 1983 | 24 | 0 |
| 1984 | 33 | 0 |
| 1985 | 26 | 0 |
| 1986 | 42 | 0 |
| 1987 | 44 | 0 |
| 1988 | 31 | 0 |
| 1989 | 31 | 0 |
| 1990 | 49 | 0 |
| 1991 | 44 | 0 |
| 1992 | 56 | 0 |
| 1993 | 45 | 0 |
| 1994 | 48 | 0 |
| 1995 | 39 | 0 |
| 1996 | 55 | 0 |
| 1997 | 57 | 0 |
| 1998 | 64 | 0 |
| 1999 | 46 | 0 |
| 2000 | 48 | 0 |
| 2001 | 63 | 13 |
| 2002 | 58 | 47 |
| 2003 | 36 | 53 |
| 2004 | 40 | 79 |
| 2005 | 44 | 87 |
| 2006 | 35 | 84 |
| 2007 | 48 | 87 |
| 2008 | 38 | 93 |
| 2009 | 52 | 97 |
| 2010 | 62 | 117 |
| 2011 | 71 | 115 |
| 2012 | 68 | 128 |
| 2013 | 99 | 146 |
| 2014 | 115 | 164 |
| 2015 | 144 | 224 |
| 2016 | 179 | 199 |
| 2017 | 184 | 221 |
| 2018 | 168 | 202 |
| 2019 | 192 | 195 |
| 2020 | 200 | 173 |
| 2021 | 146 | 200 |
| 2022 | 148 | 194 |
| 2023 | 134 | 127 |
| 2024 | 165 | 158 |
| 2025 | 132 | 106 |
| 2026 | 55 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E04H 12/22Sockets or holders for poles or posts1,646
- E04H 12/02Structures made of specified materials879
- E04H 12/34Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the694
- E04H 12/18Movable or with movable sections517
- E04H 12/20Side-supporting means therefor231
- E04H 12/24Cross arms199
- E04H 12/16Prestressed structures123
- E04H 12/32Flagpoles99
Recent patents
- Method for installing wind power generator and wind power generation system29 Sep 2026US 12,747,720 B2Toyota Jidosha Kabushiki Kaisha
- Pole structure, pole assembly system and method thereof22 Sep 2026US 12,741,184 B2Sky Products, L.L.C.
- Method for manufacturing and assembling a plurality of towers on a wind farm22 Sep 2026US 12,742,439 B2Esteyco S. A.
- Utility grid and tower upgrade system and method8 Sep 2026US 12,729,557 B2Simple Grid Solutions Ltd
- Post-tensioning system for a tower of a wind turbine, post-tensioned tower of a wind turbine and method of post-tensioning a tower of a wind turbine1 Sep 2026US 12,723,426 B2Nordex Energy Spain, S.A.U.
- Safety system8 Oct 2026US 2026/0308928 A1
- Cover system for light pole footings8 Oct 2026US 2026/0308933 A1
- Automated systems and methods for truss assemblies in the construction of modular buildings1 Oct 2026US 2026/0295896 A1Buildz, LLC
- Foldable supporting device for the stabilization of a beach umbrella on the ground1 Oct 2026US 2026/0297972 A1Sabe Products S.R.L.
- System for assembling load-bearing frame of high-rise structure1 Oct 2026US 2026/0297973 A1
Most cited
By later US patents
- Lightweight extendable and retractable pole1,497US 5,333,422 AThe United States of America as represented by the United States Department of Energy · 1994
- Antenna support with multi-direction adjustability203US 5,787,673 APiRod, Inc. · 1998
- Utility pole clamp182US 6,142,434 A2000
- Flexible moment connection device for mast arm signal mounting159US 9,458,974 B22016
- Portable structure139US 5,144,780 A1992