E02D 29/045
Underground structures
Official title: Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
E02D29/045 (Underground structures) appears on 132 US grants and 116 published applications in this corpus.
Search patents in E02D- Granted patents
- 132
- Published applications
- 116
- Assignees
- 93
- Inventors
- 277
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 2 |
| 2003 | 4 | 1 |
| 2004 | 3 | 6 |
| 2005 | 5 | 2 |
| 2006 | 3 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 1 |
| 2013 | 3 | 7 |
| 2014 | 4 | 10 |
| 2015 | 2 | 5 |
| 2016 | 5 | 4 |
| 2017 | 6 | 8 |
| 2018 | 5 | 4 |
| 2019 | 8 | 9 |
| 2020 | 5 | 7 |
| 2021 | 7 | 9 |
| 2022 | 4 | 5 |
| 2023 | 2 | 10 |
| 2024 | 10 | 9 |
| 2025 | 4 | 8 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Underground space frame structure and construction method thereof28 Jul 2026US 12,692,681 B2Shandong University
- System and method of retrofitting a lagoon entry system to a covered lagoon19 May 2026US 12,630,992 B2Bristola, LLC
- System for building prefabricated modular, sealed, and pressurized habitats31 Mar 2026US 12,590,454 B2
- Underground facility and method of constructing underground facility25 Nov 2025US 12,480,274 B2
- System and method for sealing and pressurizing enclosed facilities via prefabricated modules, plugs, doors, and inserts28 Oct 2025US 12,455,092 B2
- Construction method for structure16 Oct 2025US 2025/0320684 A1Jgc Corporation
- Method and device for arranging fatigue arousal section in tunnel and road tunnel28 Aug 2025US 2025/0269140 A1Beijing University of Technology
- Module system for an underground stormwater retention basin, parts for such module system and stormwater retention basin and methods of building such stormwater retention basin3 Jul 2025US 2025/0215680 A1Urban Water Retention Aps
- Multi-stage shock absorption and seismic device for urban underground comprehensive pipe tunnel19 Jun 2025US 2025/0198111 A1Hebei Geo University
- Venting system and venting method22 May 2025US 2025/0162793 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Precompressed water and/or fire resistant tunnel expansion joint systems, and transitions64US 9,631,362 B2Emseal Joint Systems Ltd. · 2017
- Method of constructing a concrete basement from prefabricated concrete panels51US 5,493,838 A1996
- Joint for pre-cast concrete twin-leaf arch sections51US 6,243,994 B1Bebo of America · 2001
- Methods of laying underground conduits46US 4,329,083 ASociete Soletanche · 1982
- Prefabricated concrete element for building a civil engineering structure having an arched wall31US 6,161,342 ASamflo · 2000