E02D 29/00
Independent underground or underwater structures
Official title: {Independent} underground or underwater structures (underground tanks B65D88/76; hydraulic engineering, e.g. sealings or joints, E02B; underground garages E04H6/00; underground air-raid shelters E04H9/12; burial vaults E04H13/00); Retaining walls
E02D29/00 (Independent underground or underwater structures) appears on 2,673 US grants and 2,006 published applications in this corpus.
Search patents in E02D- Granted patents
- 2,673
- Published applications
- 2,006
- Assignees
- 1,143
- Inventors
- 3,532
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 27 | 0 |
| 1978 | 30 | 0 |
| 1979 | 17 | 0 |
| 1980 | 18 | 0 |
| 1981 | 29 | 0 |
| 1982 | 19 | 0 |
| 1983 | 19 | 0 |
| 1984 | 37 | 0 |
| 1985 | 25 | 0 |
| 1986 | 31 | 0 |
| 1987 | 45 | 0 |
| 1988 | 31 | 0 |
| 1989 | 49 | 0 |
| 1990 | 57 | 0 |
| 1991 | 60 | 0 |
| 1992 | 40 | 0 |
| 1993 | 37 | 0 |
| 1994 | 51 | 0 |
| 1995 | 51 | 0 |
| 1996 | 74 | 0 |
| 1997 | 52 | 0 |
| 1998 | 75 | 0 |
| 1999 | 65 | 0 |
| 2000 | 56 | 0 |
| 2001 | 50 | 20 |
| 2002 | 66 | 50 |
| 2003 | 51 | 52 |
| 2004 | 65 | 68 |
| 2005 | 54 | 61 |
| 2006 | 56 | 72 |
| 2007 | 26 | 78 |
| 2008 | 45 | 86 |
| 2009 | 34 | 85 |
| 2010 | 58 | 70 |
| 2011 | 57 | 70 |
| 2012 | 41 | 68 |
| 2013 | 53 | 84 |
| 2014 | 84 | 104 |
| 2015 | 77 | 84 |
| 2016 | 73 | 105 |
| 2017 | 81 | 101 |
| 2018 | 92 | 89 |
| 2019 | 114 | 109 |
| 2020 | 83 | 84 |
| 2021 | 85 | 97 |
| 2022 | 69 | 79 |
| 2023 | 60 | 83 |
| 2024 | 76 | 93 |
| 2025 | 59 | 77 |
| 2026 | 39 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E02D 29/02Retaining or protecting walls1,277
- E02D 29/12Manhole shafts1,059
- E02D 29/045Underground structures132
- E02D 29/06Constructions, or methods of constructing, in water84
- E02D 29/063Tunnels submerged into, or built in, open water51
- E02D 29/16Arrangement or construction of joints in foundation structures51
- E02D 29/10Tunnels or galleries specially adapted to house conduits36
- E02D 29/04Making large underground spaces15
All 9 subgroupsShow fewer
Recent patents
- Modular wall system6 Oct 2026US 12,753,565 B2
- Modular pit frame6 Oct 2026US 12,753,566 B2The Ford Meter Box Company, Inc.
- Manhole cover assembly29 Sep 2026US 12,747,556 B2Neenah Foundry Company
- Manhole lock system22 Sep 2026US 12,742,300 B2EJ USA, Inc.
- Foot frame bottom plate type fixed parts, sealed inner lining structure, underground chamber and construction method15 Sep 2026US 12,735,854 B2Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
- Universal mount cover assembly for underground enclosures8 Oct 2026US 2026/0308865 A1Oldcastle Infrastructure, Inc.
- Wall block system1 Oct 2026US 2026/0297883 A1Westblock Systems, Inc.
- Smart manhole cover with radar level meter1 Oct 2026US 2026/0297884 A1Bvk Teknoloji Anonim Sirketi
- Utility handholes1 Oct 2026US 2026/0302753 A1AFL Telecommunications LLC
- In-ground utility access box and related methods1 Oct 2026US 2026/0302754 A1American Polymer Corporation
Most cited
By later US patents
- Concrete retaining wall block, retaining wall and method of construction therefore182US 4,920,712 AStonewall Landscape Systems, Inc. · 1990
- Retaining wall with flexible mechanical soil stabilizing sheet164US 4,914,876 AKeystone Retaining Wall Systems, Inc. · 1990
- Method of forming concrete retaining wall block164US 5,484,236 AAllan Block Corporation · 1996
- Masonry block retaining wall with attached keylock facing panels and method of constructing the same154US 5,788,423 AG. P. Industries, Inc. · 1998
- Modular block retaining wall system150US 5,816,749 AThe Tensar Corporation · 1998